初三句型用法透视(Unit 11)

发布时间:2016-11-5 编辑:互联网 手机版

作者:丁楠

一、stop ... from ... 阻止某人做某事

【考点说明】from是介词,后边需接名词或动名词。如:

You can't stop him (from) going there. 你不能阻止他去那儿。

【知识串联】stop ... from doing sth. = keep ... from doing sth. = prevent ... from doing sth. 阻止......做某事。这三个短语用在主动语态中,stop和prevent构成的两短语中from可以省略,但keep短语中的from不可省略。各短语用在被动语态中时,from都不可省略。如:

The snow kept us from driving to school. 这场雪让我们无法开车上学。

We were prevented from going home by the heavy rain. 大雨使我们不能回家了。

二、more or less 或多或少;大体如此

【考点说明】修饰数目时应放在数词后面,强调程度时放在be或助动词之后、行为动词之前。如:

There are 50 students more or less in our class. 我们班大约有50个学生。

His homework is more or less finished. 他的家庭作业差不多完成了。

He has more or less understood the text. 他基本上理解了课文。

【知识串联】(1)or so大约;左右。通常用在数词的后面。如:

I have 100 yuan or so.我大约有100元钱。

(2)the more ... , the less ...越......越不...... 如:

The more difficult the questions are, the less likely I am able to answer them. 问题越难,我就越答不上来。

三、neither ... nor ... 既不......也不......

【考点说明】连接两个代词做主语时,谓语要遵循就近原则。如:

Neither you nor I am a student. 你不是学生,我也不是学生。

【知识串联】neither, either和both都用于谈及两个人或两件事物,either表示"两者中任何一方",both表示"两者都",它们都可以用作形容词或代词。类似短语还有:either ... or ... 或者......或者......,both ... and ... 双方都。如:

Either you or he has been invited. 你和他都被邀请了。

Both Tom and Mary are good students. 汤姆和玛莉都是好学生。