名师串讲综合英语(二)(珍藏版)19

山西自考网 发布时间:2013年07月25日

32.dare作情态动词主要用于否定句、疑问句和感叹句,其否定式是dare notdaren’t,过去式为dared,过去否定式为dared notDare notdared not为正式语言,daren’t普遍使用。

He dared not tell the old woman the bad news because she had a weak heart.

She daren’t ask her boss for leave as he seems to be in a bad mood.

How dare you read my diary!

在肯定陈述句中,dare只有I dare say/daresay这一固定搭配,用于口语,表示我想我敢说我估计我承认

I daresay someone is cooking in the house;it smells delicious.

I daresay we’re going to have a very hot summer this year.

注意:dare做实意动词时,常用于肯定句。

He dared to behave like that in my house!

33.used to 表示过去经常的活动或方式、习惯

She used to dislike speaking in public,but now she quite enjoys it.

We used to have a blue sky and clear water,but all this is gone now.

其否定式为used not/usedn’t/didn’t use to,used not最普通。

She used not to get up early on Sundays but now,since she has changed her job,she has to.

I used not to go to work by car.I rode a bike,which was good exercise.

其疑问式最自然的形式是 did you used to/did he use to 另一种形式 used you/used they/used he 不如前一种。

Did you use to know him?You seem to understand him very well.

Didn’t there use to be a lot of trees behind the house?

注意:used tobe/get used to的区别。be/get used to表示习惯于……”,它可以有各种时态形式。

I’m used to hard work and heat and that’s why I can work in India.

When you are in London,you must get used to driving on the left.

34.ought toshould的意思和用法基本相似,常可相互替换

1ought to 表示义务

What we ought to do is to give people memorable things according to our ability.

You ought to drive within the speed limit.It’s for your own good.

(2)ought to表示推测

If the professor says so,then it ought to be true.

David ought to be in his office at this time of day.

(3)ought to + have + ed分词,表示该履行而未履行的义务。

I ought to have returned the books last week.Now they are overdue and I have to pay a fine.

You ought to have warned the boy of the danger of playing with fire.Then he wouldn’t have burnt his hands.

(4)否定式为oughtn’t to/shouldn’t,疑问式为should you/he/she等。

—You oughtn’t to eat between meals.

—I know I oughtn’t to,but I often get hungry.

You oughtn’t to smoke so much;you are inviting trouble.

 

Relatedness of NonFinite Verbs

to the Subject of a Sentence

 

35.一般来说动词非谓语形式(不定式、分词和动名词)的逻辑上的主语应该跟主句谓语动词的主语保持一致。

The children,having eaten their meal,were allowed to leave the table.

Reaching the river,we pitched camp for the night.

Persuaded by our optimism,he gladly contributed time and money to the scheme.36.动词非谓语形式的逻辑上的主语在固定用法中跟主句的主语不一致。

Strictly speaking,nobody is allowed in here.

Provided that a film entertains,few people care about its other merits.

To put it frankly,there is nothing more I can do about it.

Sequence of Tenses

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