Put your coat on也可以写成put on your coat为什么有的不能分开,比如说look for

来源：学生作业帮编辑：搜搜考试网作业帮分类：英语作业时间：2024/06/05 15:40:10

Put your coat on也可以写成put on your coat为什么有的不能分开,比如说look for
We can say'i am looking for my pen',but we cannot say 'I am looking my pen for'.Why?

put on是动词加副词短语,可以分开.
look for是动词加介词短语,不可分开,是固定词组.
再问：如何区分是副词还是介词呢？比如说they cut off the king's head.中的cut off 是副词吗？（个人认为）难道只能凭感觉判断吗？有什么方法吗？还是只能靠平时积累？
再答：一般动词加介词构成的短语是不能分开的，分开了就不能构成词组相应的含义。比如说：think over，拆开了是认为的意思，合在一起是仔细考虑的意思。而副词短语分开与在一起都不会影响它的含义。比如：turn on打开。

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