这个句子为什么用过去时啊The house has never been rebuilt since it was burnt down.since后为什么要用过去时啊

这个句子为什么用过去时啊The house has never been rebuilt since it was burnt down.since后为什么要用过去时啊 the flowers were so lovely that they were sold in no time为什么这个句子用过去时? i suddenly realized that the man was speaking to me这个句子为什么一定用过去进行时 he put his book down and （）out of the room为什么填went不填go 这个句子没体现出是过去时啊 The pot was used for keeping hot water.这个句子里的前半句话为什么要用was过去时? He stopped reading and answered the phone 为什么这个句子是一般过去式而不是过去进行时? 过去进行时中when前用过去进行时,when 后用一般过去时对吗?比如下面这个句子该怎么填,并说明为什么.He_______his leg when he _________in the soccer game.(break/play) 请帮我看看为什么这个句子要用过去进行时态The workers were all sleeping like a log,even without knowing when the boss had arrived.这个句子为什么要用were ..sleeping.就用过去时难道不行吗? The clever boy made a hole in the wall(through which)he could see(what)was going on inside the hous为什么不是用through that ,what, 这个英语句子为什么用过去将来时啊?When she studied in middle school,no fans could have imagined how well she would do in the world of entertainment.为什么要用would do Excuse me ,can you tell me______?因选用why the train is late.为什么在这个句子不能用过去时 宾语从句中的引导词指物时且做介词的宾语时用that还是which书上说 The hous that I was born in is gone一种形式 get married这个marry是过去时还是过去分词啊?为什么? Just then,The telephone rang.这里为什么用过去式啊,为什么不是过去进行时呢? after为什么可以用在动词过去式之后表示一段时间之后?They got there after three weeks．这个句子应该是将来时,为什么动词用过去时? If it wasn't for you,I don't think I would have been able to say .这个句子是与过去事实相反 为什么从句用过去时态,而不是过去完成时态.这个句子是与过去事实相反 为什么从句用过去时态，而不是过去完 句子的时态问题Look,she has a bunch of flowers in her hand.这个句子为什么用过去时has,而不用进行时is having?这个句子为什么是一般现在时，我看错了！ 为什么要用过去时?为什么这个句子要用过去时?my mother woke me up very early every morning.每天早上不是一般现在时的时态吗?不是要用wakes me up?