It is easy for him to get tired中的get为什么不加s?

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It is easy for him to get tired中的get为什么不加s?
It is easy for him to get tired中的get为什么不加s?

It is easy for him to get tired中的get为什么不加s?
不定式to后跟动词原形
人称为第3人称一般现在时就加s
如:she gets tired everyday.

get是接在to 后面的,都用原形
to do 是动词不定式子,固定用法It is easy for somebody to do

不定式to后跟动词原形