作业帮英语if语法
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/09 19:24:01
英语if语法
if 引导的从句较多,个人以为一般状语从句较简单,而虚拟语气比较复杂,所以简单写了点虚拟语气用法.
if 虚拟用法
1、对将来虚拟 if +did/were to /should ,.would/could /might +do
其中 were to 和should 可以倒装
例如：If it were to rain = Were it to rain
If it should rain =should it rain
2、对过去虚拟if + had done,.would + have done
倒装Had it done .
例外：If i had followed his advice ,i would not be in such trouble .句中用be 而非 done是因为现在处于困境中
3、对现在虚拟 if +did ,...would /could /might +do
再问： if引导的是不是虚拟多点
if 虚拟用法
1、对将来虚拟 if +did/were to /should ,.would/could /might +do
其中 were to 和should 可以倒装
例如：If it were to rain = Were it to rain
If it should rain =should it rain
2、对过去虚拟if + had done,.would + have done
倒装Had it done .
例外：If i had followed his advice ,i would not be in such trouble .句中用be 而非 done是因为现在处于困境中
3、对现在虚拟 if +did ,...would /could /might +do
再问： if引导的是不是虚拟多点
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