his teacher asks him to go to the principal's office? 这是个什么句子?哪些语法呀?

问题描述:

his teacher asks him to go to the principal's office? 这是个什么句子?哪些语法呀?

这是一个陈述句
是一般现在时,主语是第三人称单数,所以动词ask加了s
里面包含一个固定词组的用法:ask sb to do sth“让某人做某事”
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