只需一步,快速开始
jiangpei756 发表于 2012-3-11 20:09 从专业语法的角度看,可以是sing,也可以是singing,前者表示看见的全过程,后者则是表示看的那一瞬间在唱歌 ...
frank730 发表于 2012-4-23 14:34 你答得很到味呀,当然hear 也有这个用法
发表回复 回帖后跳转到最后一页
The children do not _________today.
Can you tell me (how to get to the post office)?
The girl ____(ride)the bike is in Class One.
“英语课”该选哪一个?
The ball is____the chairs。
Thank you for ____(help)me sweep the floor.
There are lots of things ________at school.
请教!
查看TA的全部帖子>>