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Have to is NOT an auxiliary verb (it uses the verb have as
a main verb). We include have to here for convenience.
Must is a modal auxiliary verb.
have to for objective
obligation
We often use have to to say that something is obligatory.
Example: Children have
to go to school.
Have to is often grouped with modal auxiliary verbs for
convenience, but in fact it is not a modal verb. It is not
even an auxiliary verb. In the have to structure, "have"
is a main verb.
The basic structure
for have to is:
subject |
+ |
auxiliary verb |
+ |
have |
+ |
to-infinitive |
In general, have
to expresses impersonal obligation. The subject
of have to is obliged or forced to act by a separate,
external power (for example, the Law or school rules). Have to is objective.
Look at these examples:
- In
France, you have to drive on the right.
- In
England, most schoolchildren have to wear a uniform.
- John has
to wear a tie at work.
In each of the above
cases, the obligation is not the subject's opinion or idea. The obligation
comes from outside. We can use have to in all
tenses, and also with modal auxiliaries. We conjugate it just like any
other main verb.
Must for subjective obligation
We often use must to
say that something is essential or necessary.
Example: I must go.
The basic structure
for must is:
subject |
+ |
auxiliary verb |
+ |
main verb |
The main verb is
always the same form: base
Look at these
examples:
subject |
auxiliary verb |
main verb |
|
I |
must |
go |
home. |
You |
must |
visit |
us. |
We |
must |
stop |
now. |
Must
not for
prohibition
We use must
not to say that something is not permitted or allowed.
Example:
Passengers must not talk to the driver. (Prohibition)
So when we want to
express a negative idea for must
without expressing prohibition, we need to used have to
Example: I don’t have to wake up at 6a m in
quarantine (absence of necessity)
A quiet life
Arthur is a small town in the US. It’s in
the state of Illinois, 250km south of Chicago. In some ways it is a typical
town. It has a small town centre with some shops, a bank, a post office, and a
few restaurants, but there’s also something different about Arthur. Some of the
houses are modern but some houses haven’t got electricity or phones. Then, in
the car parks you can see horses and carts next to the cars. That is because a
lot of Amish people live there.
The Amish are an old
religious community. They originally came from Switzerland and Germany in the
18th century. They left Europe to escape religious persecution, and
a lot of them went to live in US. Today, The Amish live in small communities in
the states of Ohio, Pennsylvania, Iowa, and Illinois. They live very simple
lives.
The Amish community
has a lot of rules, or Ordung. These
rules tell them what they must and mustn’t do. For example, they mustn’t drive
cars, use phones, or have electricity in their homes. There are also rules
about their clothes and hair. Amish women and girls must wear long dresses, and
men must wear dark jackets and trousers. Women mustn’t cut their hair short and
men must have beards. Some of the rules are strict, but the Amish are happy to
follow them because they like their traditional way of life.
Match the sentences halves:
Arthur are a
religious community in the US.
Amish is a list of
rules.
Ordung is a town in
Illinois.
Answer the questions.
1) Why is Arthur
different to other small towns in the US?
____________________________________________________________________________
2) Where did the Amish
originally come from?
___________________________________________________________________________
3) When and why did they
live Europe?
__________________________________________________________________________
4) What do Amish rules
say about travelling and technology?
__________________________________________________________________________
5) What rules are there
about clothes and hair?
__________________________________________________________________________
Conditional sentences
Zero Conditional
In zero conditional sentences, the tense in both parts of the sentence is
in the simple present.
If + simple present, simple
present
Eg: If
you heat ice, it melts.
If it rains, the grass gets wet
This kind of sentence expresses the idea of a general truth, such as scientific facts.
In this kind of sentences we talk about real time, all time fact.
Eg: If
you freeze water, it become solid.
If you don’t water plants, they die.
If you mix red and blue, you get purple.
We can also use this type of conditional
sentences to give instructions with imperative ideas.
Eg: If
Bill phones, tell him to meet me at the bank.
If you want to come, call me before 5pm.
In zero
conditional sentences we can use if
and When with the same sense.
Eg: If
you heat ice, it melts.
When you heat ice, it melts.
If you don’t water plants, they die.
When you don’t water plants, they die.
First conditional
If + simple present, Will +
infinitive
Eg: If
you don’t hurry, you will be late.
If it rains this weekend, we will not be
able to play tennis.
These
conditional sentences are used to talk about the real probability that an event
take place. The idea of these sentences are based on real facts and are used to
give warnings.
Eg: If I
finish my assignment, I will have my lunch.
We can also use verbs such as: can, must,
should (modal verbs) in the main clause to express degree of certainty,
permission or recommendation.
Eg: If
you break the glass, you might get hurt.
If
you get the symptoms, you should go to the doctor.
Second conditional
If + simple past, Would+
infinitive
Eg: If I bought her dress, I would do
it on line.
If I had a lot of money, I would not stay here.
This
kind of sentences refer to ideas that are improbable to happen Also the situation may happen if the real
situation were different and we do not really expect the situation to happen.
In the
case of the verb to Be, we use were
for all the subjects instead of the corresponding ones.
Eg: If I
were you, I would not do that.
If she were the right one, I would marry
her.
Exercises
Complete the sentences with the
appropriate form of the verbs and add a corresponding verb.
1) If
you _____________ (wash) the dishes, I (cook) ____________________ dinner
tonight.
2) If my
dad ___________ (have) time next week, we (paint)______________ my room.
3) You
(learn) _______________ a lot about Argentinian history, if you _________
(visit) the exhibition.
4) If
the weather (be/not) ____________ too bad tomorrow, we (play) ______________
golf.
5) We
(get/not) ______________ there on time, If we (catch/not) ______________ the
bus.
6) If
you need the car in the afternoon, I______________ shopping in the afternoon.
7) If I
_________ a hat, I would look like an old woman.
8) I
will buy this bag, if they _________ it in blue.
9) She
wouldn’t pay cash, if she _______________a credit card.
10) If I
didn’t have you, I ______________ what to do.
Rewrite
the sentences and use the first conditional. Keep the same meaning.
Example
My
car will be out of order. I won't drive you there.
If my car is out of order, I won't drive you
there.
1)
We'll have a nap after lunch. We'll be sleepy.
We'll have a nap after lunch if we
......................... sleepy.
2) I won't know his phone number. I won't be
able to give him a ring.
If I .................................
his phone number, I won't be able to give him a ring.
3) John will be at work. He won't go with us.
As long as John ..................... at
work, he won't go with us.
4)
He won't like the monitor. He can send it back to the shop.
Provided that he ......................
the monitor, he can send it back to the shop.
5)
We won't help you. We won't have enough time.
We won't help you if we
...................... enough time. You will choose some other hotel.
6) You won't be happy about it. You will choose
some other hotel
unless you ................. happy about
it.
7)
Take up this course. You will like it.
If you.......................... this
course, you will like it.
8)
Don't tell your parents. They will be surprised.
Unless you.............................
your parents, they will be surprised.
9) You won't eat anything. You'll be hungry.
If you ...............................
anything, you'll be hungry.
10)
We'll set off tomorrow. The weather will be good.
We'll set off tomorrow on condition that
the weather....................... good.
Have to is NOT an auxiliary verb (it uses the verb have as
a main verb). We include have to here for convenience.
Must is a modal auxiliary verb.
have to for objective
obligation
We often use have to to say that something is obligatory.
Example: Children have
to go to school.
Have to is often grouped with modal auxiliary verbs for
convenience, but in fact it is not a modal verb. It is not
even an auxiliary verb. In the have to structure, "have"
is a main verb.
The basic structure
for have to is:
subject |
+ |
auxiliary verb |
+ |
have |
+ |
to-infinitive |
In general, have
to expresses impersonal obligation. The subject
of have to is obliged or forced to act by a separate,
external power (for example, the Law or school rules). Have to is objective.
Look at these examples:
- In
France, you have to drive on the right.
- In
England, most schoolchildren have to wear a uniform.
- John has
to wear a tie at work.
In each of the above
cases, the obligation is not the subject's opinion or idea. The obligation
comes from outside. We can use have to in all
tenses, and also with modal auxiliaries. We conjugate it just like any
other main verb.
Must for subjective obligation
We often use must to
say that something is essential or necessary.
Example: I must go.
The basic structure
for must is:
subject |
+ |
auxiliary verb |
+ |
main verb |
The main verb is
always the same form: base
Look at these
examples:
subject |
auxiliary verb |
main verb |
|
I |
must |
go |
home. |
You |
must |
visit |
us. |
We |
must |
stop |
now. |
Must
not for
prohibition
We use must
not to say that something is not permitted or allowed.
Example:
Passengers must not talk to the driver. (Prohibition)
So when we want to
express a negative idea for must
without expressing prohibition, we need to used have to
Example: I don’t have to wake up at 6a m in
quarantine (absence of necessity)
A quiet life
Arthur is a small town in the US. It’s in
the state of Illinois, 250km south of Chicago. In some ways it is a typical
town. It has a small town centre with some shops, a bank, a post office, and a
few restaurants, but there’s also something different about Arthur. Some of the
houses are modern but some houses haven’t got electricity or phones. Then, in
the car parks you can see horses and carts next to the cars. That is because a
lot of Amish people live there.
The Amish are an old
religious community. They originally came from Switzerland and Germany in the
18th century. They left Europe to escape religious persecution, and
a lot of them went to live in US. Today, The Amish live in small communities in
the states of Ohio, Pennsylvania, Iowa, and Illinois. They live very simple
lives.
The Amish community
has a lot of rules, or Ordung. These
rules tell them what they must and mustn’t do. For example, they mustn’t drive
cars, use phones, or have electricity in their homes. There are also rules
about their clothes and hair. Amish women and girls must wear long dresses, and
men must wear dark jackets and trousers. Women mustn’t cut their hair short and
men must have beards. Some of the rules are strict, but the Amish are happy to
follow them because they like their traditional way of life.
Match the sentences halves:
Arthur are a
religious community in the US.
Amish is a list of
rules.
Ordung is a town in
Illinois.
Answer the questions.
1) Why is Arthur
different to other small towns in the US?
____________________________________________________________________________
2) Where did the Amish
originally come from?
___________________________________________________________________________
3) When and why did they
live Europe?
__________________________________________________________________________
4) What do Amish rules
say about travelling and technology?
__________________________________________________________________________
5) What rules are there
about clothes and hair?
__________________________________________________________________________
Conditional sentences
Zero Conditional
In zero conditional sentences, the tense in both parts of the sentence is
in the simple present.
If + simple present, simple
present
Eg: If
you heat ice, it melts.
If it rains, the grass gets wet
This kind of sentence expresses the idea of a general truth, such as scientific facts.
In this kind of sentences we talk about real time, all time fact.
Eg: If
you freeze water, it become solid.
If you don’t water plants, they die.
If you mix red and blue, you get purple.
We can also use this type of conditional
sentences to give instructions with imperative ideas.
Eg: If
Bill phones, tell him to meet me at the bank.
If you want to come, call me before 5pm.
In zero
conditional sentences we can use if
and When with the same sense.
Eg: If
you heat ice, it melts.
When you heat ice, it melts.
If you don’t water plants, they die.
When you don’t water plants, they die.
First conditional
If + simple present, Will +
infinitive
Eg: If
you don’t hurry, you will be late.
If it rains this weekend, we will not be
able to play tennis.
These
conditional sentences are used to talk about the real probability that an event
take place. The idea of these sentences are based on real facts and are used to
give warnings.
Eg: If I
finish my assignment, I will have my lunch.
We can also use verbs such as: can, must,
should (modal verbs) in the main clause to express degree of certainty,
permission or recommendation.
Eg: If
you break the glass, you might get hurt.
If
you get the symptoms, you should go to the doctor.
Second conditional
If + simple past, Would+
infinitive
Eg: If I bought her dress, I would do
it on line.
If I had a lot of money, I would not stay here.
This
kind of sentences refer to ideas that are improbable to happen Also the situation may happen if the real
situation were different and we do not really expect the situation to happen.
In the
case of the verb to Be, we use were
for all the subjects instead of the corresponding ones.
Eg: If I
were you, I would not do that.
If she were the right one, I would marry
her.
Exercises
Complete the sentences with the
appropriate form of the verbs and add a corresponding verb.
1) If
you _____________ (wash) the dishes, I (cook) ____________________ dinner
tonight.
2) If my
dad ___________ (have) time next week, we (paint)______________ my room.
3) You
(learn) _______________ a lot about Argentinian history, if you _________
(visit) the exhibition.
4) If
the weather (be/not) ____________ too bad tomorrow, we (play) ______________
golf.
5) We
(get/not) ______________ there on time, If we (catch/not) ______________ the
bus.
6) If
you need the car in the afternoon, I______________ shopping in the afternoon.
7) If I
_________ a hat, I would look like an old woman.
8) I
will buy this bag, if they _________ it in blue.
9) She
wouldn’t pay cash, if she _______________a credit card.
10) If I
didn’t have you, I ______________ what to do.
Rewrite
the sentences and use the first conditional. Keep the same meaning.
Example
My
car will be out of order. I won't drive you there.
If my car is out of order, I won't drive you
there.
1)
We'll have a nap after lunch. We'll be sleepy.
We'll have a nap after lunch if we
......................... sleepy.
2) I won't know his phone number. I won't be
able to give him a ring.
If I .................................
his phone number, I won't be able to give him a ring.
3) John will be at work. He won't go with us.
As long as John ..................... at
work, he won't go with us.
4)
He won't like the monitor. He can send it back to the shop.
Provided that he ......................
the monitor, he can send it back to the shop.
5)
We won't help you. We won't have enough time.
We won't help you if we
...................... enough time. You will choose some other hotel.
6) You won't be happy about it. You will choose
some other hotel
unless you ................. happy about
it.
7)
Take up this course. You will like it.
If you.......................... this
course, you will like it.
8)
Don't tell your parents. They will be surprised.
Unless you.............................
your parents, they will be surprised.
9) You won't eat anything. You'll be hungry.
If you ...............................
anything, you'll be hungry.
10)
We'll set off tomorrow. The weather will be good.
We'll set off tomorrow on condition that
the weather....................... good.
Have to, Must
Have to is NOT an auxiliary verb (it uses the verb have as
a main verb). We include have to here for convenience.
Must is a modal auxiliary verb.
have to for objective
obligation
We often use have to to say that something is obligatory.
Example: Children have
to go to school.
Have to is often grouped with modal auxiliary verbs for
convenience, but in fact it is not a modal verb. It is not
even an auxiliary verb. In the have to structure, "have"
is a main verb.
The basic structure
for have to is:
subject |
+ |
auxiliary verb |
+ |
have |
+ |
to-infinitive |
In general, have
to expresses impersonal obligation. The subject
of have to is obliged or forced to act by a separate,
external power (for example, the Law or school rules). Have to is objective.
Look at these examples:
- In
France, you have to drive on the right.
- In
England, most schoolchildren have to wear a uniform.
- John has
to wear a tie at work.
In each of the above
cases, the obligation is not the subject's opinion or idea. The obligation
comes from outside. We can use have to in all
tenses, and also with modal auxiliaries. We conjugate it just like any
other main verb.
Must for subjective obligation
We often use must to
say that something is essential or necessary.
Example: I must go.
The basic structure
for must is:
subject |
+ |
auxiliary verb |
+ |
main verb |
The main verb is
always the same form: base
Look at these
examples:
subject |
auxiliary verb |
main verb |
|
I |
must |
go |
home. |
You |
must |
visit |
us. |
We |
must |
stop |
now. |
Must
not for
prohibition
We use must
not to say that something is not permitted or allowed.
Example:
Passengers must not talk to the driver. (Prohibition)
So when we want to
express a negative idea for must
without expressing prohibition, we need to used have to
Example: I don’t have to wake up at 6a m in
quarantine (absence of necessity)
A quiet life
Arthur is a small town in the US. It’s in
the state of Illinois, 250km south of Chicago. In some ways it is a typical
town. It has a small town centre with some shops, a bank, a post office, and a
few restaurants, but there’s also something different about Arthur. Some of the
houses are modern but some houses haven’t got electricity or phones. Then, in
the car parks you can see horses and carts next to the cars. That is because a
lot of Amish people live there.
The Amish are an old
religious community. They originally came from Switzerland and Germany in the
18th century. They left Europe to escape religious persecution, and
a lot of them went to live in US. Today, The Amish live in small communities in
the states of Ohio, Pennsylvania, Iowa, and Illinois. They live very simple
lives.
The Amish community
has a lot of rules, or Ordung. These
rules tell them what they must and mustn’t do. For example, they mustn’t drive
cars, use phones, or have electricity in their homes. There are also rules
about their clothes and hair. Amish women and girls must wear long dresses, and
men must wear dark jackets and trousers. Women mustn’t cut their hair short and
men must have beards. Some of the rules are strict, but the Amish are happy to
follow them because they like their traditional way of life.
Match the sentences halves:
Arthur are a
religious community in the US.
Amish is a list of
rules.
Ordung is a town in
Illinois.
Answer the questions.
1) Why is Arthur
different to other small towns in the US?
____________________________________________________________________________
2) Where did the Amish
originally come from?
___________________________________________________________________________
3) When and why did they
live Europe?
__________________________________________________________________________
4) What do Amish rules
say about travelling and technology?
__________________________________________________________________________
5) What rules are there
about clothes and hair?
__________________________________________________________________________
Conditional sentences
Zero Conditional
In zero conditional sentences, the tense in both parts of the sentence is
in the simple present.
If + simple present, simple
present
Eg: If
you heat ice, it melts.
If it rains, the grass gets wet
This kind of sentence expresses the idea of a general truth, such as scientific facts.
In this kind of sentences we talk about real time, all time fact.
Eg: If
you freeze water, it become solid.
If you don’t water plants, they die.
If you mix red and blue, you get purple.
We can also use this type of conditional
sentences to give instructions with imperative ideas.
Eg: If
Bill phones, tell him to meet me at the bank.
If you want to come, call me before 5pm.
In zero
conditional sentences we can use if
and When with the same sense.
Eg: If
you heat ice, it melts.
When you heat ice, it melts.
If you don’t water plants, they die.
When you don’t water plants, they die.
First conditional
If + simple present, Will +
infinitive
Eg: If
you don’t hurry, you will be late.
If it rains this weekend, we will not be
able to play tennis.
These
conditional sentences are used to talk about the real probability that an event
take place. The idea of these sentences are based on real facts and are used to
give warnings.
Eg: If I
finish my assignment, I will have my lunch.
We can also use verbs such as: can, must,
should (modal verbs) in the main clause to express degree of certainty,
permission or recommendation.
Eg: If
you break the glass, you might get hurt.
If
you get the symptoms, you should go to the doctor.
Second conditional
If + simple past, Would+
infinitive
Eg: If I bought her dress, I would do
it on line.
If I had a lot of money, I would not stay here.
This
kind of sentences refer to ideas that are improbable to happen Also the situation may happen if the real
situation were different and we do not really expect the situation to happen.
In the
case of the verb to Be, we use were
for all the subjects instead of the corresponding ones.
Eg: If I
were you, I would not do that.
If she were the right one, I would marry
her.
Exercises
Complete the sentences with the
appropriate form of the verbs and add a corresponding verb.
1) If
you _____________ (wash) the dishes, I (cook) ____________________ dinner
tonight.
2) If my
dad ___________ (have) time next week, we (paint)______________ my room.
3) You
(learn) _______________ a lot about Argentinian history, if you _________
(visit) the exhibition.
4) If
the weather (be/not) ____________ too bad tomorrow, we (play) ______________
golf.
5) We
(get/not) ______________ there on time, If we (catch/not) ______________ the
bus.
6) If
you need the car in the afternoon, I______________ shopping in the afternoon.
7) If I
_________ a hat, I would look like an old woman.
8) I
will buy this bag, if they _________ it in blue.
9) She
wouldn’t pay cash, if she _______________a credit card.
10) If I
didn’t have you, I ______________ what to do.
Rewrite
the sentences and use the first conditional. Keep the same meaning.
Example
My
car will be out of order. I won't drive you there.
If my car is out of order, I won't drive you
there.
1)
We'll have a nap after lunch. We'll be sleepy.
We'll have a nap after lunch if we
......................... sleepy.
2) I won't know his phone number. I won't be
able to give him a ring.
If I .................................
his phone number, I won't be able to give him a ring.
3) John will be at work. He won't go with us.
As long as John ..................... at
work, he won't go with us.
4)
He won't like the monitor. He can send it back to the shop.
Provided that he ......................
the monitor, he can send it back to the shop.
5)
We won't help you. We won't have enough time.
We won't help you if we
...................... enough time. You will choose some other hotel.
6) You won't be happy about it. You will choose
some other hotel
unless you ................. happy about
it.
7)
Take up this course. You will like it.
If you.......................... this
course, you will like it.
8)
Don't tell your parents. They will be surprised.
Unless you.............................
your parents, they will be surprised.
9) You won't eat anything. You'll be hungry.
If you ...............................
anything, you'll be hungry.
10)
We'll set off tomorrow. The weather will be good.
We'll set off tomorrow on condition that
the weather....................... good.