题目

关于until的选择题
1.Don't get on or get off the bus until it ( )
A.stop B.has stopped C.is stopping D.won't stop
2.Has the train arrived?
No.It ( )here until one o'clock tomorrow.
A.hasn't got B.didn't arrive C.won't get D.didn't leave
正确答案两个都是B
为什么?

提问时间：2021-01-15

答案

B until从句接完成时表示动作全部完成.
句意为等车停稳再下车
C until从句接未来时间,主句用将来时,not...until形成句型
句意为车直到明天凌晨一点才到.