I waited until he had finished his homework.请问这句的过去完成时为何是用在fininsh上面,为何不是wai过去完成时不是说两个动作都发生在过去,其中早发生的用过去完成,晚发生的用一般过去时,在这句话

I waited until he _______________ (finish) his homework.应该填什么答案? I waited until he had finish his homework中,为什么until后面是过去完成时,怎么不是一般现在时? He waited until she had finished speaking.怎么翻译? He waited until his mother arrived=He( )( )until his mother arrived同义词转换 He waited until my brother came back .He----- -----until my brother came back. He waited until the volcano became quiet.He waited ( )quiet.A.to the volcano to becomeB.the volcano to becomeC.the volcano becameD.for the volcano to become 英文帮简译4句1.I hove on appointment with him tonight.2.He referred all his troubles to bad luck.3.would you please clean wp the mess?4.we waited in the porch until it stopped raining. 他一直等到两天后他回来：He waited until she returned two days later.为什么填waited until ,我填的是until wait,还有为什么要加ed形式 关于英语问题 明天月考了 He waited until my mother came back.He ----- ---------- until my mother came back.能不能填kept waiting 初中英语_ the midnight he waited for his mother. A. Till B. Since C. Until D. At_ the midnight he waited for his mother. A. Till B. Since C. Until D. At求详细解答! He waited until she was about to leave中的从句是什么从句 请在一小时内回答 waited until he _______ his homework.答案为什么填finished?能不能填过去完成时?如果可以,和一般过去时有什么区别? 请问For he waited until it stop raining.for这个词在句子中是什么意思?做什么成分? I waited at the school gate until it stopped raining(保持原句意思)I _________ _______ the school gate until it stopped raining. My daughter____for me until I came back last night.A didn't wait B waited C is waiting D waits 问两个英语同意句转换.1：I waited there until you called me.2：Therewas no reply. 在下列短文中修改出10处错误的地方.One day when my friend and I was wandering in a busy street,he suddenly entered into a shop.I waited until he was driving out by someone in the shpo.He was very angry with the impolite treatment.They m 用not until或until改写句子I know nothing about it until he told me.