第 9 讲 情态动词与虚拟语气1. — How's your new babysitter? — We ______ask for a better one. All our kids love her so much. (2011 浙江卷) A. should B. might C. mustn't D. couldn't 【答案及解析】1. D 考查情态动词的用法。句意为“——你的新保姆怎么样？”“——找不到更好的了。我们的孩子们都很喜欢她。”should 应该；might 可能，可以；mustn't 禁止；couldn't 不可能。2. Had I known about this computer program, a huge amount of time and energy ______.(2010 浙江卷) A. would have been saved B. had been saved C. will be saved D. was saved 【答案及解析】2. A 考查虚拟语气。根据句子的倒装特征判断此处是省略了 if 的虚拟语气，原形是：If I had known about this computer program, a huge amount of time and energy ______. 句意为：如果我早知道这个电脑程序，就可以节省大量的时间和精力了。3. “You ______ have a wrong number，” she said. “There's no one of that name here.”(2010 浙江卷) A. need B. can C. must D. would【答案及解析】3. C 考查情态动词。情态动词如果表示非常肯定的推测要用 must。句意为：“你肯定打错电话了，”她说，“我们这里没有一个叫那个名字的人。”4. The doctor recommended that you ______ swim after eating a large meal.(2009 浙江卷) A. wouldn't B. couldn't C. needn't D. shouldn't【答案及解析】4. D 考查虚拟语气。根据句子中的 recommended(推荐)可知，从句应用“should ＋ 动词原形” 表示虚拟，且此句为否定句。情态动词情态动词的基本用法 1. 情态动词不能独立作谓语，其后接动词原形。2. 情态动词没有人称和数的变化。3. 情态动词一般没有时态的变化。4. 情态动词接动词原形表描述现在或将来发生的动作或状态(modal verb＋ be / do, modal verb ＋ be doing)，情态动词接动词不定式的完成式表描述过去发生的动作或状态用心 爱心 专心1(modal verb ＋ have done)。 常考情态动词的用法1. can, could(1)表能力(＝be able to)。(2)表许可＝may。(3)表客气的请求，could 比 can 更委婉。(4)表推测，仅用于否定句和问句。(5)(表示可能、许可)能够……；可以…… (6)...
