例句有：
I cant be doing with people who complain all the time.
我无法忍受那些整天发牢骚的人。
What can they be doing?
他们究竟在干些什么呢？
You cant be doing two things at once
不能一心二用。
扩展资料
We were having supper when the phone rang.
我们正在吃晚饭时电话响了。
I have started planning out what I shall be doing next week.
我已开始详细安排下周要干的'事儿了。
Ourteachermustbecorrectingourexampapers.
我们的老师想必在批改试卷。
I will be reading at 9 oclock tommorrow morning.
明天的早上九点我将会阅读。
He might be doing a spot of gardening if the weather is fine.
天气晴朗的话，他也许会侍弄侍弄花草。
