2013考研英语语法重难点精解：虚拟语气(3)

　　三、条件句中连词if省略

　　若条件句中的if省略，则把were， had或should置于从句主语之前，形成半倒装句。

　　例句： The businesses are risky， but should we succeed(but if we should succeed)， we would be rich.

　　分析： 该句是由but连接的并列句，其中should we succeed是省略if的倒装句。

　　译文： 做生意是冒险的，但是如果我们成功了，我们就会很富裕。

　　例句： The millions of calculations involved， had they been done by hand (if they had been done...)，would have lost all practical value by the time they were finished.

　　分析： 该句是复合句，had they been done by hand是省略if的倒装句，by the time引导状语从句。

　　译文： 所涉及的数百万次运算，如果用手工进行，等到完成时，恐怕早就失去所有的实用价值了。