悬赏最高100! Is this the reason (he explained)at the meeting for his carelessness in his work?

问题描述:

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...。。。。。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。。。。。。。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。万分感谢!