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I’ve been waiting for an hour and he still hasn’t turned up.

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/15 14:24:11
I’ve been waiting for an hour and he still hasn’t turned up. 我等了一个小时,可他还没来.
上面这句话中,为什么用hasn't(he still hasn't……)?haven't\hasn't 一般在什么时候用?
......重点是为什么用hasn’t?三单也可以用doesn't啊,不是么?
haven't 意思是"还没有",后面要跟动词
I haven't eaten yet.我还没吃饭的
I haven't finished.我还没干完呢
再问: - -为什么用....干嘛不用doesn't?
再答: 因为开头是 I've = I have 所以后面用 haven't = have not 更恰当
再问: 哦哦 懂了,and是并列连词,所以前面用have后面也要用是么?
再答: en