I wonder since when it has been like this,为什么since后的那个句子是用完成

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：2024/07/26 16:25:48

I wonder since when it has been like this,为什么since后的那个句子是用完成式
-myfoot hurts terribly,doctor.
-I wonder since when it has been like this?
since后都是加时间点,也就是过去式,可是为什么这里的since后加的句子是完成时呢?
我认为since是个介词,所以后面的所有都是做since的宾语从句呀,可是为什么会是完成时呢?

你的知识点掌握的很好,但你理解错了
他问的是since when 而不是since it has been like this
将这个一般疑问句转化成陈述句就是
since I dropped fom the bed yesterday（用这个答案代替when） it has been like this
有疑问可追问
再问：请问原句是不是等于I wonder it has been like this since when? 而since后所加的时间点因为是询问，所以用when代替？句子结构为：主语I 谓语wonder 宾语也就是it has been like this since when 而since when只是做宾语从句中的状语。可是这样分析的话，却发现宾语缺个引导词。。请问下我又哪错了。。
再答：你的分析是对的但这个宾语从句的引导词可以省略
再问：感谢

I wonder since when it has been like this,为什么since后的那个句子是用完成 It has been years since I returned home,为什么since用,而不用when?分不英文句子语法修改.It's has been 6 days since i purchased.我想要句子的意思是,“已 Jim has been like this ever since this morning. I have been like this since last month 的句意没有表示被动啊为什么还要加been it has been since.用法为什么I've been like this since last week不能变成I've liked this si How long has it been since this company was established? It has been 5 years since this party----.如题英语翻译It has been a long time since I first heard of this movi it has been two days since I started study.这句子对吗? It has been a month since I have seen you.