3) 當(dāng) “so/such … that”結(jié)構(gòu)中的so或such 位于句首時用倒裝。

　　So cold was it at night that I could hardly fall asleep.

　　Such was the force of explosion that all the windows were broken.

　　4) 分句以so, neither, nor, no more等副詞位于句首，表明前面句子中所說明的情況也使用于后面的句子時用倒裝。

　　Copper is a good conductor. So are many other metals.

　　He didn’t see the film last night, neither did she.

　　2. 強(qiáng)調(diào)句型

　　這里講的強(qiáng)調(diào)句主要是以it為引導(dǎo)詞的分裂句。其構(gòu)成形式為：It is (was) +被強(qiáng)調(diào)部分+ that(who, which) + 句子的其他部分。被強(qiáng)調(diào)的部分通常為主語、賓語和狀語。

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

　　It is what you will do that is essential.

　　Note:

　　在被強(qiáng)調(diào)部分的后面，一般用that引出句子的其他部分。但是如果強(qiáng)調(diào)的部分是表示人的名詞，那么也可用who;如果是指物的名詞也可用which。

　　It was Jane that/who lent me the money.

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

　　如果強(qiáng)調(diào)的是原因狀語從句，只能用because引導(dǎo)，不能由since, as或why引導(dǎo)。

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

　　有三類句子成分不可以進(jìn)行強(qiáng)調(diào)，即表語、謂語動詞和由though, although,　whereas等引導(dǎo)的從句。

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