He is good at English, ______we all know. A．that B．as C．whom D．what

题型：不详难度：来源：

He is good at English, ______we all know.

A．that

B．as

C．whom

D．what

答案

解析

as作关系代词可以单独用来引导非限制性定语从句。这时as所指代的不是主句中某个名词，而往往指代整个主句的含义。as在从句中可以作主语、宾语。从句可放在主句后，也可置于主句前。在本句中,as作宾语.

举一反三

I have two grammars, ______are of great use.

A．all of which

B．either of which

C．both of that

D．both of which

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Smoking, _______ is a bad habit, is, however, popular.

A．that

B．which

C．it

D．though

题型：不详难度：| 查看答案

.Do you know the year ______the Chinese Communist Party was founded?

A．which

B．that

C．when

D．on which

题型：不详难度：| 查看答案

Great changes have taken place since then in the factory _______we are working.

A．where

B．that

C．which

D．there

题型：不详难度：| 查看答案

I have bought such a watch _______ was advertised on TV.

A．that

B．which

C．as

D．it

题型：不详难度：| 查看答案