问题补充:
I got on the bus, he got off.
A. As
B. While
C. Until
D. Till
答案:
(答案→)A. As
B. While
C. Until
D. Till
解析:句意:当我上车时,他下车了。As用作连词,意为“当……的时候”,故选A。While用作连词表示对比,后面跟延续性动词;故选A。
时间:2018-07-30 07:29:27
I got on the bus, he got off.
A. As
B. While
C. Until
D. Till
(答案→)A. As
B. While
C. Until
D. Till
解析:句意:当我上车时,他下车了。As用作连词,意为“当……的时候”,故选A。While用作连词表示对比,后面跟延续性动词;故选A。