英语动词时态问题1． There (be) _ have been__ several such occurrences in the past few weeks.在过去的几个星期,发生了几宗事故.为什么不用had been ,不是说在过去的几个星期吗?2． We are going to Florida as soon as we (finish) _finish_____ taking our final exams.为什么用 finish 是因为 be going to do 3． A lot of people were standing around when the police (arrive) _arrived___________.根据主句’ were standing around’,状语从句不应该用 was arriving 1、3都可以理解了,2还是不太明白,是否理解为因为'be going to'表将来,所以从句用一般现在时来表将来时？
英语动词时态问题
1． There (be) _ have been__ several such occurrences in the past few weeks.
在过去的几个星期,发生了几宗事故.为什么不用had been ,不是说在过去的几个星期吗?
2． We are going to Florida as soon as we (finish) _finish_____ taking our final exams.
为什么用 finish 是因为 be going to do
3． A lot of people were standing around when the police (arrive) _arrived___________.
根据主句’ were standing around’,状语从句不应该用 was arriving
1、3都可以理解了,2还是不太明白,是否理解为因为'be going to'表将来,所以从句用一般现在时来表将来时？
as soon as 和条件状语从句（if引导的）的语法差不多
主句用现在 从句用将来
1、此句为现在完成时。因为发生的事故在过去，对现在有影响；而不是发生在之前对过去有影响。
2、going,coming等词可以现在进行时表将来。
3、应该是在警察来到之后才出现主句，故从句应用一般过去时。
1、这里说的是在过去的几个星期,所以用现在完成时,在过去的过去才用过去完成时2、这里和be going to do 结构没有关系,这句话的意思是只要我们已完成我们的期末考试我们就去佛洛雷达 3、这句话的意思是说当警察到的时...
1.不清楚，我也认为是had been
2.be going to 是将来时，主将从现，是用finish
3.这句话的意思是“当警察到达的时候，许多人正在围观”