情態動詞
a. must b. can c. need d. may 7. it has been announced that candidates _______ remain in their seats until all the papers have been collected. a. can b. will c. may d. shall 8. you can’t imagine that a well-behaved gentleman ______ be so rude to a lady. a. might b. need c. should d. would 9. —don’t forget to come to my birthday party tomorrow. —_______. a. i don’t b. i won’t c. i can’t d. i haven’t 10. i didn’t see her in the meeting-room this morning. she____ at the meeting. a. mustn’t have spoken b. shouldn’t have spokenc. needn’t have spoken d. couldn’t have spoken例題答案key: c d b b key: c key: c a key：a key: b b d a key: d c key：a key: b key: d a b key: a b key: c key: a key：c key：c c練習答案與解析 1. b 從第二個分句“他太矮了”可以推知說話者持否定態度，needn’t意思是“沒有必要”，與語境不符。 2. c 根據句意“我已經告訴她怎樣到那兒，但是或許我應該給她寫下來”可知，說話者含有“后悔、遺憾”的意味，應使用“情態動詞+完成式”形式，“must+完成式”表示對過去的肯定推測，“should+完成式”才表示虛擬意義。 3. c 根據第二分句“否則的話他就會給我打電話了”可知“jack肯定還沒到”，“can’t+完成式”意思是“根本不可能”。 4. a 從第二分句可知，這是婦女和兒童專用候車室，因此你“不準”坐在這兒。mustn’t表示“禁止，不準”。 5. b can在此表示許可。