(
课件网) 情态动词和虚拟语气 Step 1 Speech Step 2 Learning Objectives Learning Objectives 1. Enable students to know the usage of modal verb and subjunctive. 2. Improve students’ ability to solve the problem about them. Step 3 Lead-in [高考感悟] 单句填空 1.(2020·天津卷)Jim says we ____stay in his house as long as we leave it clean and tidy. 2.(2020·江苏卷)If I hadn’t been faced with so many barriers,I _____not be where I am. 3.(2018·北京卷)In today’s information age,the loss of data _____cause serious problems for a company. 4.(2018·江苏卷)It’s strange that he _____have taken the books without the owner’s permission. can would may/can should 5.(2018·江苏卷)There is a good social life in the village,and I wish I _____(have) a second chance to become more involved. 6.(2018·天津卷)I can’t find my purse.I _____(leave) it in the supermarket yesterday,but I’m not sure. 7.(2018·北京卷)They might have found a better hotel if they _____(drive) a few more kilometers. 8.(2018·天津卷)If we _____(catch) the flight yesterday,we would be enjoying our holiday on the beach. had could/might have left had driven had caught Step 4 Explanation 情态动词 can表现在的能力,could主要指过去的能力。表示“过去成功做成某事”时通常用was/were able to The little boy can speak two foreign languages. Could the girl read before she went to school Everyone was able to escape when the fire broke out. 表示可能(理论上或是逻辑判断上,并不涉及此事真的发生),常译为“往往会,有时候可能会”。常用于肯定句中 Although you can find bargains in London,it’s not generally a cheap place to shop. 表示请求和允许。在问句中could语气比can要委婉 Can I have a word with you It won’t take long. 考点一 can与could 表示惊异、怀疑、不相信等态度。主要用于否定句、疑问句或感叹句中 How can you be so careless 表示推测。常用于否定句和疑问句中,语气较强 He can’t be in the classroom;the light is not on. cannot/can never...too/enough...表示“再……也不为过” You can never be too careful when driving a car. cannot but do sth./cannot help but do sth./cannot choose but do sth.表示“不得不/只好做某事” You cannot choose but go with me. 用于第二、三人称的陈述句中,表示命令、许诺、警告、强制、威胁、决心等;此外,颁布法律、规定时也用shall You shall do as your father says. Each party shall respect the articles of this contract. 用于第一、三人称的疑问句中,表示说话人征求对方的意见或向对方指示 Shall the man standing outside have a try 考点二 shall 考点三 must 表示主观上的“必须,应该”,其否定形式mustn’t表示禁止。对比: have to表示客观上的“不得不”,可用于各种时态 The work must be finished as soon as possible. OK,then,you mustn’t forget your medical card. 以must开头的问句,其否定回答用needn’t或don’t have to —Must I pay in cash —No,you needn’t/don’t have to. 表示“非要,偏要”做某事,表达出说话者的一种不满情绪 —Can I smoke here —No. Go to the smoking section,if you must. 表示对具体事情的推测,意为 “一定,肯定”,语气较强,只用于肯定句中 Since nobody gave him ... ...
