module 7 unit 21 lesson 3 communication workshop grammar-全文預(yù)覽
【正文】 ask him. I 11. ________ (must / shall) go now. I 12. ________ (couldn’t / can’t) go to class all last week. There’s so much work to do. Tony: I know what you mean. You 13. ________ (can’t / must) be very tired. David: Yes. 參考答案 【 即學(xué)即練 】 I. 1. can 2. must 3. need 4. will 5. may II. 1. Could 2. would 3. shouldn’t 4. Can 5. Would 6. can 7. can 8. May 9. might 10. could 11. must 12. couldn’t 13. must 。如： You’ve just had lunch. You can’t be hungry. 【 即學(xué)即練 】 I. 選用方框內(nèi)合適的情態(tài)動詞完成下面對話。如： We should take good care of our children. You shouldn’t leave a baby alone in the house. I wonder what’s happened to Annie. She should be here by now. should 還可以表示驚訝、失望、遺憾等情感， 此時意為“竟會”。 will表示現(xiàn)在的習(xí)慣， would 表示過去的習(xí)慣。 will 表示現(xiàn)在的意愿，有時可用于條件句中， would 表示過去的意愿（ would如表示現(xiàn)在的意愿，語氣較委婉）。如： You may / might use my bicycle so long as you return it before 12:00. I can’t eat。 could 比 can 表示的說話語氣更委婉。如： My brother can speak four foreign langu
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