> 英语 >
The boys were singing while the girls were dancing last night.
为什么用were singing.不能用sang吗?
人气:319 ℃ 时间:2019-10-19 04:12:22
解答
这里是是用过去进行时,所以用were singing,当时正在唱.
推荐
猜你喜欢
© 2026 79432.Com All Rights Reserved.
电脑版|手机版