•第六章 情态动词和虚拟语气 •△ 情态动词和虚拟语气讲解△•一、情态动词•( 一 ) 情态动词的基本用法•1 ． can / could•(1) 表“能力”。•【例 1 】 Just be patient.You ________ expect the world to change so soon.(2010· 全国Ⅰ )•A ． can't B ． needn't•C ． may not D ． whether•答案 A •【例 2 】 We ________ eat in a restaurant because none of us had any money on us.•A ． can't B ． couldn't•C ． may not D ． might not•答案 B•(2) 表“许可”。回答 could 的提问常用 can ，一般不用 could 。 •【例 3 】 — Could I use your bike?•—Yes, surely you ________.•A ． might B ． will C ． can D ． could•答案 C•(3)could 一般只表过去的能力；若表示过去的能力得到了实施，一般用 was / were able to ，不用could 。 •【例 4 】 The fire spread throughout the hotel very quickly but everyone ________ get out.•A ． had to B ． would•C ． could D ． was able to•答案 D •2 ． may / might•(1) 表“许可” ( ＝ can) 。若表示“不可以、禁止”，用 mustn't 或 can't 。回答 might 的提问常用 may ，一般不用 might 。•【例 5 】 — ________ I take the book out? •—I'm afraid not.(2010· 四川 )•A ． Will B ． May C ． Must D ． Need•答案 B •【例 6 】 — Might I use your pen?•—Yes, of course you ________.•A ． may B ． must C ． could D ． might•答案 A•【例 7 】 — May I watch TV now? •—No, you ________.•A ． can B ． mustn't C ． couldn't D ． mightn't•答案 B•(2)may 表“祝愿”，置句首，主谓要倒装。 •【例 8 】 Good luck to you, and ________ all your wishes come true!•A ． can B ． may C ． must D ． might•答案 B •3 ． must / have to•(1) 表“必须”。 must 强调主观看法； have to 强调客观需要。•【例 9 】 ① This is a bad party—We really ________ go.•②This is a lovely party, but we ________...
