IF引导虚拟条件句中的省略现象

　　在引导虚拟条件句的时候，if在什么情况下会省略呢，一些学生还是存有疑惑，今天我给大家简单说明一下。（这可是高考语法中考核的一项核心内容，大家必须掌握的）

　　如果从句中有were， had， should，可以省略if，用倒装句式“were， had， should+主语”。如：

　　If I were at school again， I would study better.

　　= Were I at school again， I would study better.

　　If you had come earlier， you would catch the bus.

　　= Had you come earlier， you would catch the bus.

　　If it should rain tomorrow， we would not go climbing.

　　=Should it rain tomorrow， we would not go climbing.

　　注：若省略的条件句中的谓语动词是否定形式时，不能用动词的缩略形式。如：

　　我们可以说：Were it not the expense， I would go abroad now. 但不能说：Weren't it for the expense， I would go abroad now.