英语四级语法指导：强调句型

 　　在备考英语四级的过程中，各位同学一定不要忽略了语法，语法在各个题型中都有体现，而且语法学的好对做题也有非常大的帮助，本文就为各位同学介绍了英语四级常用语法，供同学们参考。

　　强调句型

　　这里讲的强调句主要是以it为引导词的分裂句。其构成形式为：It is (was) +被强调部分+ that(who, which) + 句子的其他部分。被强调的部分通常为主语、宾语和状语。

　　It is only when one is ill that one realizes the value of health.

　　It is what you will do that is essential.

　　Note:

　　在被强调部分的后面，一般用that引出句子的其他部分。但是如果强调的部分是表示人的名词，那么也可用who;如果是指物的名词也可用which。

　　It was Jane that/who lent me the money.

　　It was this novel that/which they talked about last night.

　　如果强调的是原因状语从句，只能用because引导，不能由since, as或why引导。

　　It was because(不用since或as) he had never had the opportunity that John hadn’t learned to drive.

　　有三类句子成分不可以进行强调，即表语、谓语动词和由though, although,　whereas¹等引导的从句。

　　It is although he is young that he can speak four languages. (误)

　　Although he is young, he can speak four languages. (正)

　　It is whereas he prefers pop song that I like classical music. (误)

　　I like classical music whereas he prefers pop songs. (正)

1 whereas   

conj.而，却，反之

参考例句：

• They want a house,whereas we would rather live in a flat.他们想要一座房子，而我们宁愿住在一套房间里。
• Some praise him,whereas others condemn him.有些人赞扬他，而有些人谴责他。