Question

英语填空 为什么？用了什么语法 ~~谢谢！

1，You need not(wake)_____me up.I don't have to go to work today.
2,If you had listened carefully in class ,you (know)_____how to do this problem now.
3,You need not (write)____such a long report,because the boss has no time to read it.

Answer 1

1,wake 因为need后面接动词原形
2，would have known因为有从句if知该句为过去完成时的虚拟语态，故从句必须用would表示虚拟
3，write

Answer 2

1 wake need是助动词 后用原型
2 should have known 用过去完成时
3 write 同 1

Answer 3

1 wake，need是情态动词，后面接动词原型；
2 should have known，用should 表示虚拟语气，又由前面用过去进行时知道用进行时态；
3 write，理由同1

Answer 4

wake needn'用作情态动词后面加动词原形 would/should have known if从句后用虚拟语气对现在虚拟用现在完成是 have written表示本不需要做却做了 也是对现在的虚拟