M: I know what I am doing. Don't worry.
M：我知道自己在做什么，别担心，你能帮我个忙吗？
I? M doing some research on why people use the Internet.
我这样做对为什么人们使用互联网的一些研究。
He asked me what I was doing at seven p. m. the day before.
他问我前一天晚上七点在干什么。
I 'm fine, thanks. What have you been doing?
我很好，谢谢。您最近在做些什么？
Whta I"m doing is teaching him a lesson."
我现在这样做是为了给他一次教训。
Because I 'm doing my homework.
因为我正在做作业。
我很忙忙什么?。
I wasn't doing my homework at 9 o 'clock p. m. last Sunday.
上个星期天晚上九点我不在做家庭作业。
I was watching TV at 8 p. m. What were you doing at that time?
晚上八点我在看电视，那时你在做什么？
I was doing my homework at 9 o 'clock p. m. last Sunday.
上个星期天晚上九点我正在做家庭作业。
I "m capable of doing such a difficult job."
我能做这项艰巨的工作。
Lord, I"m doing all I can to be a better man."
谁能难倒楼下的人就是今年的最佳才艺奖得主！
Lord, I"m doing all I can to be a better man."
谁能难倒楼下的人就是今年的最佳才艺奖得主！
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