| 词组 | modal auxiliary verbs introduction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 释义 | Contents overview Modal Auxiliary Verbs introduction Section 7 Modal Auxiliary VerbsintroductionWhat are modal auxiliary verbs?The modal auxiliary verbs are will, would, shall, should, can, could, ought, may, might and must. Their grammar is different from that of other verbs: for example, they have no infinitives, participles or past tenses . For details, 68.1. Some other verbs and expressions are used in similar ways to modals: have to, be able to, be supposed to, had better and need. meaningsWe do not usually use modal verbs to say that situations definitely exist, or that particular events have definitely happened. We use them, for example, to talk about things which we expect, which are or are not possible, which we think are necessary, which we want to happen, which we are not sure about, which tend to happen, or which have not happened. This is a complicated area of grammar: each modal verb has more than one use; on the other hand, different modals can have very similar uses. Modal meanings fall into four groups.degrees of certainty ( 69–72)Most modal verbs can be used to express degrees of certainty about facts, situations or events: for instance to say that something is certain, probable, possible or impossible.It will rain tomorrow.She should be here soon.We may get a new car.It can't be true.obligation, freedom to act, etc ( 73–81)Most modal verbs can also express various ideas relating to obligation, freedom to act, recommended behaviour, permission, willingness and similar matters. They are common in requests, suggestions, invitations and instructions.Students must register by 30 January.You should see the doctor.If you will come this way …Could I talk to you for a moment?Note that these meanings are usually expressed from the speaker's point of view in statements, and from the hearer's in questions. Compare:You must go and see Anna. (I think it is necessary.)Must you go and see Anna? (Do you think it is necessary?)ability ( 82–85)Modal verbs, especially can and could, are used to say what people and things are able to do because of their knowledge, skill, design and so on.She can speak six languages.My old car could do 120mph.typical behaviour ( 86–87)We can talk about what people and things typically or habitually do or did, using can, may, will, would and used to.Dan can really get on your nerves.Most evenings he'll just sit watching TV.A female crocodile may lay 30–40 eggs.I used to play a lot of tennis.Do you know what's wrong with these, and why?I must to water the plants. 68.1 | It mustn't be Emily at the door – she's in Ireland. 69.2 | You mustn't work tomorrow if you don't want to. 73.4 | It can rain this afternoon. 71.1 | May you go camping this summer? 71.3 | I felt very hot and tired. I might be ill. 71.7 | I might read what I liked when I was a child. 81.3 | Next week's exam must be easy. 69.9 | Yesterday I should clean the whole house. 76.2 | James should get back home yesterday. Has anybody seen him? 70.2 | It can rain this afternoon. 71.1 | I'm not sure where Emma is. She can be out shopping. 71.1 | You have better hurry up. 77.2 | 'The phone's ringing.' 'I'm going to answer it.' 79.1 | 'There's the doorbell.' 'I go.' 79.1 | I phone you tonight. 79.3 | May everybody park here? 81.2 | Yesterday evening Daniel could watch TV for an hour. 81.3 | I could run 10km yesterday. 82.4 | I can speak French at the end of this course. 83.1 | He uses to smoke. 87.2 | You used not to like him, used you? 87.3 | contents of this section
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英语用法大全包含1354条英语用法指南，基本涵盖了全部常用英文词汇及语法点的翻译及用法，是英语学习的有利工具。