定语从句专项讲解

比较：I live in the same house that he used to live in.

I'm wearing the same shirt as you wore yesterday.

比较：Here is so big a stone as no one can lift. （定语从句）

Here is so big a stone that no one can lift it.（结果状语从句）

②如为非限制性的，多单独引导一个定语从句，这种定语从句可置于句首，句中或句尾，译为"正如，这一点"。（动词常为know, see, expect, point out, etc.）

As we all know, smoking is harmful to one's health . (as 作宾语)

=As is known to all, smoking is harmful to one's health . （as 作主语）

=It's known to all that smoking is harmful to one's health .

=Smoking is harmful to one's health , as we all know .（as 作宾语）

=Smoking, as we all know, is harmful to one' health.

He was a foreigner, as I knew from his accent. (宾语, 先行词是前面整个句子)

Ⅲ. 关系副词引导的定语从句:

●When 指时间，在定语从句中作时间状语。其先行词是表时间的名词（如：time, day, week, tear, month, etc.）

He came last night when I was out.

We will put off the picnic until next week, when the weather would be better.

注意：先行词为"时间名词"，可用when引导定语从句，when在定语从句中作状语；还可以用which或that 引导，which或that在从句中作主语或宾语。

比较: I still remember the day when /on which my brother joined the army.（作状语） Next month, when you will be in your hometown, is just around the corner.

I still remember the days which/that we spent together. （作宾语）

Next winter which/that you'll spend in Harbin, I'm sure, will be exciting.

I shall never forget the day when Shen Zhou Ⅴ was launched, which has a great effect on my life.

There are occasions when joking is not permissible.

●Where 指地点，在定语从句中作地点状语。其先行词是表示地点的名词，如：place, school, factory, room, etc.

This is the place where I was born.

I live in the room where /in which he used to live.

注意：先行词是"地点名词"，定语从句可用where引导，还可用which或that引导，which/that 在从句中作主语或宾语。

比较: ※This is the factory where /in which he worked last year. （作状语）

The treatment will continue until the patient reaches the point where he can walk correctly and safely.

I think you have got to the point where a change is needed, or you would fail.

Government reports, legal papers and most business letters are the main situations where English is used.

He's got himself into a dangerous situation where he's likely to lose control of the plane.

The small mountain village where we spent our holiday last month lies in what /the place which is now part of Hubei.

This is the park which/that they visited last year. （作宾语）

Not having been there before, he simply had no idea about the place, which everyone says is worth visiting.