英语中从句里that 和which 的区别 who和whom的区别 还有在从句中怎么用how.what.why 等疑问词

which 是用来进一步解释sth。 如：his best movie, which won several awards, was about time travel. 这里 which won several awards 是用来解释 movie的。你注意到这里必须用两个逗号that 的用法比which 要来的广。它在句子中可以用来解释或强调。that之前是不能用逗号的。如：where is the coat that she was talking about？or I was scared that I didn't know what to do。Who 做定语从句的时候和which 有相似，但是是用来进一步解释主语的人的。如： his sister，who is a teacher，is talking over there。Whom 做定语从句的时候是用来解释宾语的人如： I am talking to David whom is a famous actor从句中 How 是用来解释怎样的- i don't know how to talk to David - 我不知道怎样和大卫讲从句中 what 是用来解释什么的 - I can't remember what I talked to David - 我不记得我和大卫讲了什么从句中 why 是用来解释为什么的 - I don't know why I talked to David - 我不知道我为什么要和大卫说话。希望能帮到你！！Cheers！

1.that 和which 都可以引导定语从句，其区别主要有以下几点：1）如果先行词为不定代词，或被形容词的最高级所修饰，那么只能用that,不能用which.2)引导限制性定语从句只能用that, 同样，引导非限制性定语从句只能用which.2.who是主格，whom是宾格，例如：1)I want to know who broke the glass.(在这里who是定语从句的主语，故用主格）2)The man with whom my father is talking with is my math teacher.（在这里whom是定语从句中talk with的宾语，故用宾格）3.how, what, why，where, when等特殊疑问词常放在动词之后，从句之首用来引导宾语从句，例如：Can you tell me how i can get there?He told what he did.I want to know why you have come here.He know when they will leave.希望我讲明白了！