beendoing是什么时态例句
回答
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2022-03-10
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Ann is very tired. She has been working hard
安很累。她一直在努力工作
扩展资料
So, what have you been doing today?
那你今天都干什么了?
He's been doing the same job for 50 years ─ man and boy.
他从小就干着同一份工作,有50年了。
What have you been doing this week?
你这个星期都在做些什么?
The car must have been doing at least 100 miles an hour.
这车速肯定每小时至少100英里。