Pocket英语语法(崔荣容)-视频笔记 下载本文

2. would rather表示“宁愿、宁可、最好、还是……为好”,

语感比“had better”要轻。

You would rather deal with it now. 处理

3. 否定形式分别为: had better not+动词原形 would rather not+动词原形

He had better not eat more.

You would rather not deal with it now.

4. 练习:

You had batter stay here.你最好待在这儿 I would rather not say it.我还是不说的好

第二十八讲 情态动词(5)used to +v/would +v

1. used to,would表示过去习惯性动作,可译为“过去常常……”

a. used to可指过去的状态或情况,would指过去反复发生的动作。

The novel used to be popular. 这小说过去很流行。

b. would表示过去反复发生的动作。如果某一动作无反复性,就不能用would,只能用used to. He would practice English every week.

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I used to live in Beijing.

c. used to表示过去经常性或习惯性的动作或状态现在已经结束,would则表示有可能再发生。

People used to believe that the earth was flat.平的 He would go to the park as soon as he was free. 练习:

1. The windows used to be open. 过去一直开着 2. They would gather together every week. 聚在一起 3. Sam used to play golf, but he doesn’t now.

第二十九讲 情态动词(6)否定和疑问 1. 情态动词的否定:情态动词+ not+ v原形 He can’t sing an English song. He may not know her. 可能不…… He mustn’t go there. 不准 He doesn’t have to go there.

2. 使用情态动词进行提问:情态动词+主语+v原形 Can he sing an English song? Yes,he can./No,he can’t.

Must he go there?

Yes,he must./No,he needn’t. (不必)

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Does he have to go there? Yes,he does./No,he doesn’t.

May I smoke here? Yes, please.

No, you can’t(不能)/mustn’t.(不准) 练习:

1. May I stay here? Yes,please.

2. Must she go back now? No,she needn’t. 3. Does he have to get up at 9:00? Yes,he does.

第三十讲 情态动词(7)

情态动词+have+p.p.(+现在完成时)

1.“情态动词+have+p.p.”:表达过去的事实;或推测的含义,表“可能已经……”。(但助动词should例外)

He may/might have arrived. 他可能已经到了 (可能性最小) He can/could have arrived. 他可能已经到了 (可能性小) He must have arrived. 他准是已经到了 (可能性大)

可能性大小排序:must、can、could、may、might

2. “should+have+p.p.”本应该…… “needn’t+have+p.p.” 本不需要…… He should have arrived. 他本应该到了(但没到) They should have finished the work. 他本应该已经完成工作(但没完成)

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You needn’t have done so. 你本不需要那么做

3. must + have+p.p. 准是已经…… Can’t +have+p.p. 不可能已经……

He must have arrived. 他准是已经到了。 He can’t have arrived. 他不可能已经到了。

练习:

1. He can/could/may/might(可能) have arrived. 2. He must(准是) have arrived.

3. You needn’t(本不需要) have done so. 4. They should (本应该)have finished the work. 5. He can’t (不可能)have arrived.

第三十一讲 被动语态(1)被动态的构成和含义

1.如果主语是动作的承受者,则用动词的被动语态作谓语。 2.被动语态的构成:be+过去分词(p.p.)…by sb.

他被妈妈带到了美国。

He is taken to America by his mother. 3.被动语态有各种时态:

The information is needed by us. 一般时 be done

The book was being read by him. 进行时 be being done

The computer has been used by her.

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