托福写作之重难点3

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托福写作之重难点3

摘要：如果快速让你的托福写作立马高大上，童鞋们一定对as,which的非限制性定语从句有点困惑，今天书海的Zoe就来和你一起了解下他们的区别。

1. as 和which引导非限制性定语从句的区别

As we all know, his parents were killed in the war.

a. as代表前面主句意思时，有“正如…”之意，而which没有此意思，从句中的动词常是expect, know, see, think, want, suppose等。

He won the match, as we had expected.

He agreed to the plan, as was to be expected.

The police were looking for him, as he thought.

b. which 引导的非限制性定从只能位于主句后，as引导的非限制性定从可以位于主句之前、之后或之中。

As is expected, the result is satisfactory.

= The result, as is expected, is satisfactory.

= The result is satisfactory, as is expected

c. 在as + is/ was + 过去分词结构中 is/ was 可以省略，而在which引导的该结构中，is或was不可省略。

Lincoln was shot in a theatre, as (was) described in the film.

2. 介词加关系代词

1).根据从句中动词与先行词的逻辑关系，请体会：

e.g. Is that the newspaper for which you often write articles?

2). 根据从句中动词或形容词的习惯搭配，如：

e.g. Can you explain to me how to use these idioms about which I’m sure.

30. 根据先行词与介词的搭配习惯，请体会：

e.g. 1949 was the year in which the P.R.C. was founded.

注意：如果关系从句中的动词是由两个单词组成的短语动作（例如come across，fill in， look after， take on ）

The Roman coins which a local farmer came across in a field are now on display in the national museum.

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