情态动词的特点

1、1. can和和 could2. may 和和might3 must 和和 have to1、English is a language that many people around the world not speak perfectly but at least_ understand.A. may; can B. would; might C. will; must D. could; might【答案解析】根据句意和句子的语气可知，第一空表示一种可能性，用may not speak 可能不会说；第二空表示有某种能力。答案A。2、Didnt they come to the part

2、y last week? Yes. They didnt want to come with us at first, but then we _ persuade them.A. Would B. could C. were able to D. had to【答案解析】根据上下文语境及讲话人语气，选项动作表示经过努力才完成的。在这种语气的肯定句和疑问句中，常用be able to，在否定句中可用can。答案 C。3、 I promise her daughter _ get a nice present on her birthday. Will it be a big surprise

3、to her?A. should B. must C. would D. shall【答案解析】根据讲话人语气可以知道，选项部分表示讲话是给对方的一种承诺，故应该选情态动词shall用于第二或第三人称用作主语的句子结构中。答案D。4、All of us had a good time in the picnic last Sunday. Pity you werent there. I really _come but I was looking after my mother in hospital.A. mustB. ought toC. need haveD. should have 【

4、答案解析】根据上下文和讲话人语气，选项情态动词表示过去本该做而实际未做的事， 故应选用should have done 或ought to have done。 must do， ought to do表示还未发生的动作。need have done常用于否定或疑问句，表示本来不必干某事。答案 D。 5、Did you scold him for his carelessness? Yes, but _ it.A. I would rather not doB. Id rather not have doneC. I shouldnt doD. Id better not do【答案解析】根据上下文语境可以知道，选项动作是对过去事情的推测，表示过去已经责怪，而宁愿该事情没有发生之意。故选Id rather not have done，其它三个选项表示对将要做的事情的态度。答案B。6、Just as we were sitting down to have dinner, the telephone _ ring.A. must B. could C. might D