If it doesn't rain tomorrow,I will go fishing.为什么要用doesn't而不

问题描述:

If it doesn't rain tomorrow,I will go fishing.为什么要用doesn't而不用isnt
1个回答 分类:英语 2014-12-07

问题解答:

我来补答
同学,因为rain是动词,动词前只能用助动词逗 does,do,did ,而只有形容词等才能用Be 动词.这里如果要用isn't的话,可以把rain 改成rainy.希望对你有用.
 
 
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