英语:Units 13-14 重难点解释(旧人教高一下)
英语:Units 13-14 重难点解释(旧人教高一下)第5页

  询问某人身体如何,除了用以上的表达方式,还可以用"What's wrong with you?"。其中,wrong是形容词,而例句中的the matter为名词。在口语中都是很常用的。

  例如:

--What's wrong with you? (你怎么了?)

--I've had a bad headache ever since this morning. (自从今天早晨我的头就很痛。)

2.A healthy diet should include a variety of food, most of which should be rich in nutrients.

此句中的most of which引导非限定性定语从句,这是考试中常考的一类题目。

  再如:

There are all kinds of trees in the forest, most of which are tall ones.

There are all kinds of trees in the forest, and most of them are tall ones.

森林里有各种各样的树木,它们中大部分是很高的树。

以上两句的意思基本相同,但是要注意:第一句是most of which引导非限制性定语从句,而第二句为and引导的并列句。做题时,关键要分析句子的结构,尤其是有关连词的问题。

3.Only in that way will we be ready for the challenges and opportunities in life.

  only置于句首而且修饰状语时,句子用倒装语序;但是,如果only在句首修饰主语,那就用陈述语序。

  例如:

  Only people with tickets can go into the cinema. 只有那些有票的人才可以进电影院。

  Only by the end of last month had they finished the difficult task.

  只是到了上个月的月底他们才完成了那项困难的任务。

  四、语法复习

  情态动词had better, should, ought to,常被用来表示:义务、责任和规劝。

1.had better(提示:无人称的变化,不可用has/have替换它们;不用于第一人称。)意思是"最好",后面跟动词原形,即had better do something;否定式是had better not do something。

  如:

You'd better wait outside.

你最好在外面等着。

You'd better not stand in the street. There comes a car.

你最好别站在街上。来车了。

2.should用作情态动词时,各种人称单、复数通用。主要用法有: