Unit 6 Auxiliary Verbs You have already encountered three auxiliary
Download 72.78 Kb. Pdf ko'rish
|
Auxiliary Verbs
- Bu sahifa navigatsiya:
- Exercise 6-1
|
Unit 6 Auxiliary Verbs
You have already encountered three auxiliary (or helping) verbs: be, do, and have. They are conjugated and used with another verb to change that verb's meaning or tense:
I go I am going (changed to in progress or incomplete) you sing do you sing? (changed to a question)
she makes she has made (changed to the present perfect tense) There are several other auxiliary verbs you should know. Note that many of the auxiliary verbs cannot be used in all tenses. And in some cases, you have to change to a different verb to form a specific tense. The following examples will be conjugated with the third-person pronoun h e :
to be able to to be supposed to Present is able to is supposed to Past
was able to was supposed to Present Perfect has been able to has been supposed to Past Perfect had been able to had been supposed to Future will be able to will be supposed to Future Perfect will have been able to will have been
can to have to Present Past
can could OR has to had to
was able to
Present Perfect Past Perfect has been able to had been able to has had to had had to Future
will be able to will have to Future Perfect will have been able to will have had to
44
Auxiliary Verb s 45
may must
Present
Past Present Perfect Past Perfect Future
Future Perfect
may might N/A
N/A N/A
N/A
must had to has had to had had to will have to will have had to ought to should
Present Past Present Perfect Past Perfect Future
Future Perfect
ought to N/A N/A
N/A N/A
N/A
should N/A N/A
N/A N/A
N/A
to want to to need to
Present Past Present Perfect Past Perfect Future
Future Perfect
wants wanted has wanted had wanted will want will have wanted
needs to needed to has needed to had needed to will need to will have needed to
Auxiliary verbs like these are followed by an infinitive: I can go.
You must learn.
You have to learn. We should help.
We need to help. He can drive.
He ought to drive .
Exercise 6-1
1. Serena buys a new car. ___________________________________________________________________________
___________________________________________________________________________ 2. We borrow some money. ___________________________________________________________________________
___________________________________________________________________________
3. I leave at ten o'clock. ___________________________________________________________________________
___________________________________________________________________________ Practice Makes Perfect: English Grammar for ESL Learners
The boys have cereal for breakfast. ___________________________________________________________________________
___________________________________________________________________________ 5.
My sister is home by 6:00 P.M. ___________________________________________________________________________
___________________________________________________________________________
6. They travel to California. ___________________________________________________________________________
___________________________________________________________________________
7. Mr. Gutierrez carries the groceries for her. ___________________________________________________________________________
___________________________________________________________________________ Exercise 6-2
1.
You ought to stay in bed all day. ___________________________________________________________________________
2.
I should tr y hard. ___________________________________________________________________________
3.
My brother may be a little late. ___________________________________________________________________________
4.
We need to find a room for the night. ___________________________________________________________________________
5.
Ms. Brown is able to get out of bed today. ___________________________________________________________________________
6.
Ramon must remain at home today. ___________________________________________________________________________
7. They have to learn to behave well. ___________________________________________________________________________ Auxiliary Verbs 47
8. Can you hear me? ___________________________________________________________________________
9. His girlfriend wants to sell her condo. ___________________________________________________________________________
10. Do you have to work every day? ___________________________________________________________________________
has to carry out the action of the verb. Look at the sentences below. The first one shows the least degree of obligation. This is something someone doesn't have to do. The last sentence shows the greatest degree of obligation. This is something that someone absolutely must do.
"We may return the books." (Least obligation. It's our choice.) "We can return the books." (Little obligation. It's our choice.) "We are able to return the books." (Little obligation. We have the ability to do this.) "We need to return the books." (Slight obligation.) "We ought to return the books." (Little obligation, but this would be a good idea.) "We should return the books." (Little obligation, but this would be a good idea.) "We are supposed to return the books." (Some obligation. Someone has suggested we do this.) "We must return the books." (Greatest obligation. It is our duty to do this.) "We have to return the books." (Greatest obligation. It is our duty to do this.)
When you add an auxiliary to a sentence, use the same tense for the auxiliary as that of the original verb. For example: "Celeste found (past tense) a recent biography." When you add have to to that sentence, you say, "Celeste had to (past tense) find a recent biography."
Exercise 6-3
tense as in the original sentence.
1. Mr. Weston drives to Arizona. (to have to) ___________________________________________________________________________
___________________________________________________________________________
3. I left for Mexico on the tenth of May. (to want to) ___________________________________________________________________________
___________________________________________________________________________ 48 Practice Makes Perfect: English Grammar for ESL Learners
___________________________________________________________________________
6. Did you understand them? (can) ___________________________________________________________________________
___________________________________________________________________________
8. She orders the cake today. (must) ___________________________________________________________________________
___________________________________________________________________________
10. Our neighbors will paint their house. (to want to) ___________________________________________________________________________ Download 72.78 Kb. Do'stlaringiz bilan baham: 
|