We will spend the weekend ( in ) our sister's home.Were you

来源：学生作业帮编辑：大师作文网作业帮分类：英语作业时间：2024/09/23 06:22:50

We will spend the weekend ( in ) our sister's home.Were you ( at ) the doctor's last tuesday.
在这两个句子里的介词为什么不同呢,这分别是什么用法!
唉,这个介词问题总是搞晕我,不知哪位大侠可否传授下学习经验!

in one's home 在某某家,这就是直观意义上用in
at the doctor's 这里用名词所有格,其实省略了house/home,这种结构一般都用介词at
再问：老师你好，能不能帮我指下以下句子中的错误并说明原因，括号里的是原句。谢谢！ when does tom is going to move?(tom is going to move tomorrow. ) who did want to sell the house?(Jenny wanted to sell the house.) what are they doing this morning?(they worked very hard this morning.)
再答： When is Tom going to move? 助动词是be，这是be going to的句型 Who wanted to sell the house?这里不需要助动词 What did they do this moring?时态应当是一般过去我不是老师，不要这么客气……
再问：您刚刚说的直观意义又是什么意思？
再答：在家里，这个“在……里”直观上不就是用in嘛

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