A. Can B. Could C. Need D. May
6. The boy________answer this kind of hard questions one year ago.
A. can B. may C. could
7.Who is the man over there Is it Mr Li-No, it________be him. Mr Li is much taller.
1.系动词后可接形容词。
2.表示状态的系动词be(am, is, are, was, were,been),keep ,stay,表示感觉的半系动词feel (摸起来，感觉), look (看起来), smell (闻起来), sound (听起来),taste(尝起来）;
三、助动词
1.助动词本身无词义或意义不完整，必须和实义动词共同构成谓语。
3.情态动词无三单(have to除外)；不能单独使用，后接动词原形共同构成谓语
4.need既可做实义动词又可做情态动词(作实义动词，后接to do/doing,否定don’t need to do do/doing;作情态动词，后接动词原形，否定needn’t do)
5.表推测：must be一定是（语气最肯定），can be可能是，may be也许是（语气最不肯定）；can’t be一定不是（语气最肯定,must be的否定形式）
A. mustn't B. may not C. can't D. needn't
8. -Listen! Someone is singing in the next room. Who________it be Is it Wei Fang
-No. It________be her. She is at school now.
A. must B. have to C. need to D. can
4.________you mend my car I______not start it.
A. Would; would B. Must; must C. Can; can D. May; may
5.________she ride when she was three years old
系动词助动词情态动词
系动词、助动词、情态动词
1、情态动词
1.can(could):能够、可能、可以；may(might):可以、可能；must:必须；shall:将会；should:应该；will:将会，愿意；would:将会
2.半情态动词(后接动原，但否定和疑问句要借助do)：have to不得不，had better最好，used to过去常常
6.maybe也许(副词,常用在句首)；may be也许是(谓语动词，用在句中)
7.must与need开头的一般疑问句，肯定回答用must,否定回答用needn’t/don’t have to(不必).
8.may开头的一般疑问句，肯定回答用may/can,否定回答用can’t/mustn’t.
二、系动词
A. needn't be thrown B. mustn't be thrownC. can't throw D. may not throw
4. These books________out of the reading room. You have to read them here.
10.________you pass me a pen I'd like to write down the telephone number.
A. Need B. Could C. Must D. Should
二、提高题
1.-May I go to the cinema, Mum-Certainly. But you________be back by 11 o'clock.
2.常用的助动词：be(am, is, are, was, were,been,being)用于进行时态或被动语态；do(does,did)用于一般现在时或一般过去时的否定句和疑问句；have(has,had)用于完成时态；will,shall,would,should用于将来时态，shall/should只能用于第一人称。
A. will; may not B. must; mustn't C. may; can't D. may; won't
9. -Is Mr Hu in the reading room-No, he________be there. He has gone to Tianjin.
A. mustn't B. needn't C. won't D. can't
情态动词与系动词练习题
一、基础题
1.-Where's Mr Lee I have something unusual to tell him. -You________ find him. He________ Japan.ቤተ መጻሕፍቲ ባይዱ
A. may not; has gone to B. may not; has been toC. can't; has gone to D. can't; has been to
2.-Finish drawing a horse in ten minutes. OK-Sorry. It________ in such a short time.
A. may do B. can't be doneC. must do D. needn't be done
3.I have my own room in my house, so I________do what I want in it.
A. can B. may C. must D. need
2.-SARS is such a terrible disease.-Yes, it is. We________be more careful.
A. can B. may C. must D. need
3. To make our city more beautiful, rubbish________into the river.