The letter (that)I received was fro这句话哪个是主句,哪个是从句,that为什么做宾语

The letter (that)I received was from my father.这句话哪个是主句,哪个是从 Have you received the letter?中哪个是宾语 Our+teachers+believe+that+if+we+did+that句中哪个是主句哪个是从句,主句为什么可以 The letter that I received was from my father 这个句子中为什么用that不 The ,I,received ,yesterday,letter,that,was,from,my ,parents. 请大家帮分析这句子,that 是在里面做从句吗,做什么从句呢?这里的主句是哪个呀? The phone rang while I was taking a bath.这个句子中哪个是主句哪个是从句. I will tell you that等等中,哪个是宾语呀,是you还是that后面的是不是宾语从句呀,什么叫宾语从句 that was the second time that i had got the prize.这句话是定语从句,t 英语的主句?从句?(I was cooking) while (he was reading).请问从句是哪个括号的?主 I don’t think it will rain .这句话中哪个部分是主句,哪部分是从句. 这句话是定语从句么?The young man received a registered letter form th