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become是不是短暂性动词

来源:学生作业帮 编辑:作业帮 分类:综合作业 时间:2024/07/18 21:46:48
become是不是短暂性动词
我们老师说become是短暂性动词,在用于完成时态时要变成be,但是我刚才查了下become也有它的过去分词形式became,意思就是become也可以当延续性动词直接用于完成时态中啊,要不然它有过去分词是干嘛用的
短暂性动词是表示瞬时动作完成的意思,用于完成时不能和表示一段时间的状语用在一起,并不是不能用于完成时。
例子:
He has finished his homework.
He has finished his homework for three days.(结束不需要三天)
Now it has become a very beautiful city.
He has become a professional singer since 2005.(要改为been)
He was born in 2000,
He has been born for 8 years .(明显是不对了)