GIU Essential (Auxiliary verbs 040-043)

Unit 040. I am, I don’t etc.

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A

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• She isn’t tired, but he is.
• He likes tea, but she doesn’t

In these examples, it is not necessary to repeat some words.

You can use these verbs in the same way:

• am/is/are
• was/were
• have/has
• do/does/did

• can/will/might/must

• I haven’t got a car, but my sister has.
• Please help me.
  • I’m sorry, I can’t.
• Are you tired?
  • I was, but I’m not now.
• Do you think Jane will phone this evening?
  • She might.
• Are you going now?
  • Yes, I afraid I must.

You cannot use ‘m/’s/’ve etc. (short forms) in this way. You must use am/is/have etc.:

• She isn’t tired, but he is. (not … but he’s)

But you can use isn’t / haven’t / won’t etc. (negative short forms):

• My sister has got a car, but I haven’t.
• Are you and Jane working tomorrow?
  • I am, but Jane isn’t.

B

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You can use I am / I’m not etc. after Yes and No:

• Are you tired?
  • Yes, I am. / No, I’m not.
• Will Alan be here tomorrow?
  • Yes, he will. / No, he won’t.
• Is there a bus to the airport?
  • Yes, there is. / No, there isn’t.

C

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We use do/does for the present simple:

• I don’t like hot weather, but Sue does.
• Sue works hard, but I don’t.
• Do you enjoy your work?
  • Yes, I do.

We use did for the past simple:

• Did you and Chris enjoy the film?
  • I did, but Chris didn’t.
• I had a good time.
  • I did too.
• Did it rain yesterday?
  • No, it didn’t.

Exercise

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• Kate wasn’t hungry, but we were.
• I’m not married, but my brother is.
• Bill can’t help you, but I can.
• I haven’t seen the film, but Tom has.
• Karen won’t be here, but Chris will.

• You weren’t late, but I was.

• My sister can play the piano, but I can’t.
• Sam is working today, but I’m not.
• I was working, but my friends weren’t.
• Mark has been to China, but I haven’t.
• I’m ready to go, but Tom isn’t.

• I’ve got a key, but Sally hasn’t.

• I don’t like hot weather, but Sue does.
• Sue likes hot weather, but I don’t.
• My mother wears glasses, but my father doesn’t.
• You don’t know Paul very well, but I do.
• I didn’t enjoy the party, but my friends did.
• I don’t watch TV much, but Peter does.
• Kate lives in London, but her parents don’t.

• You had breakfast this morning, but I didn’t.

• Are you tired?
  • I was earlier, but I’m not now.
• Steve is happy today, but he wasn’t yesterday.
• The post office isn’t open yet, but the shops are.
• I haven’t got a telescope, but I know somebody who has.
• I would like to help you, but I’m afraid I can’t.
• I don’t usually go to work by car, but I did yesterday.
• Have ever been to the United States?
  • No, but Sandra has. She went there on holiday last year.
• Do you and Chris watch TV a lot? I do, but Chris doesn’t.
• I’ve been invited Sam’s wedding, but Kate hasn’t.
• Do you think Sarah will pass her driving test?
  • Yes, I’m sure she will.
• Are you going out tonight?
  • I might. I don’t know for sure.
• Are you American?
  • No, I’m not.
• Have you got a car?
  • No, I haven’t.
• Do you feel OK?
  • No, I don’t.
• Is it snowing?
  • No, it isn’t.
• Are you hungry?
  • Yes, I am.
• Do you like classical music?
  • Yes, I do.
• Will you be in Paris tomorrow?
  • No, I won’t.
• Have you ever broken your arm?
  • No, I haven’t.
• Did you buy anything yesterday?
  • Yes, I did.
• Were you asleep at 3 a.m.?
  • Yes, I was.