这句话时态不对吧?they must have been several hundred people present just before the show began.后面那句是过去时,但是前面那句是现在完成时,连着现在的,怎么可能before?

这句话时态不对吧?they must have been several hundred people present just before the show began.后面那句是过去时,但是前面那句是现在完成时,连着现在的,怎么可能before? they will go home for winter vacation as soon as they have finished their exams 这句话对吗?我觉得从句的时态不对吧！要是对的话怎么翻译啊？ must be going请问这句话是什么时态的? white is matches any other clothes 这句话不对吧? 人不为己天诛地灭这句话对吧? 时间过得太快,一周又要过去了--英语怎么说passed again和has passed这时态不对吧，这句话应该是什么时态？是应该用passed还是past where is are they walking是否进行时态这句话是否是现在进行时态 i must be leaving now这句话是什么时态 为什么be后用leaving “加速度越大,则物体速度的变化量一定越大”这句话不对吧 Are you having a good time 我觉得这句话不对吧,应该是do you . 登场的弧所对的圆周角相等?这句话不对吧! 三视图都是正方形的几何体是正方体这句话不对吧 what must he do?这句话中,如果把第三人称变了,变成they.那么是不是what must they do后面的do 是不是无论是什么人称都不变成does 这句话的时态用对吗?请问这句话对吗?我不晓得 must dress 因为是我「以前认为」,可是我觉得用 must have dressed 又觉得怪怪的.我以前认为土耳其人一定穿著保守.I had thought that the Turkish must dress i people remember what they were doing when they heard the news.这句话when是连词吗?那么时态不对了when连接的是people remember what they were doing 和they heard the news,这两个句子时态不一样,怎么能用when? They said they would arrive here in a week这句话是什么时态为什么要用would不用will呢 his family has notice that he's speaking English more loudly.这句话好像不对吧 怎么改啊his family has noticed that he's speaking English more loudly.这句话好像不对吧 怎么改啊 丁烷是由4个碳原子和10个氢原子组成的这句话对吗?貌似不对吧 、