悬赏最高100! Is this the reason （he explained）at the meeting for

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/06/30 20:58:18

悬赏最高100! Is this the reason （he explained）at the meeting for his carelessness in his work?
问题1括号内为什么用his explained?那如果换成why he explained为什么不行?
问题2定语从句中why后面是必须要接一件事情吗?例：Is this the reason why he was being careless in his work?
问题3is this reason （what he explained）at the meeting for his carelessness in his work?句子中把reason前面的the给去掉了,为什么括号中要加what?

不能换成why he explained,因为he explained是定语从句修饰reason,reason又是这个宾语从句中的谓语explain的宾语.这里用的引导词是that,that被省略了.关系代词that代指先行词reason.why没有这个功能.
是的,定语从句如果用关系副词why引导,那么后面必须接一件事情.
把the去掉,是因为the是定冠词,定指,而加上what he explained之后就变了.what=all that
加上what he explained之后这句话就变成了Is this reason all that he...,this reason就能了这个句子的主语了,如果再加上the,this the reason没有这样用的.
再问：。。。。。我不得不承认我英语学的非常差 1中为什么he explained是定语从句修饰reason？是不是先行词做宾语或主语时，定语用that/which？在定语从句中如何判断先行词reason是不是做状语？我只追问这一次。。。。。。。
再答：至于为什么he explained是定语从句来修饰reason，是因为he explained是一个有主语和谓语的完整的句子，在一个句子中镶嵌着另一个句子，那么被镶嵌的这个句子肯定是个从句，至于是什么从句，必须具体情况具体分析，没有什么固定标准。先行词是被修饰的词，后面一般会紧跟着关系代词that/which，that/which同时代指先行词，所以先行词如果在定语从句中作主语或者宾语，那么关系代词用that/which。先行词不能做状语，因为定语从句修饰先行词。能被修饰的只有名词或代词。
再问：万分感谢！

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