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Has your mother come back?

来源：百度知道编辑：UC知道时间：2024/05/29 19:09:17

是错误的吗？怎么改啊？I have bought a pen.也是错的吗？完成时不能用短暂性动词是吗？那come back，buyd都是短暂性动词吧？
是瞬间动词，为什么还能用完成时态呢？

Has your mother came back?
I have bought a pen.是对的

Is your mother back?
i have had a pen
是的，come\buy都是瞬间动词

Has not your mother come back ?当瞬间动词用于否定的时候就可以用于完成时态。
例如 I haven't seen her so long .see 是一个瞬间动词

Has your mother come back? 没错

I have bought a pen．也没错

最好 I bought a pen.

Did your mother come back?

“Are you out of your senses?” said his mother. “What has become of the goat?” I think she has brought out the "mother" from your character what is your mother? Is your mother in today? Is your mother today? Where ____ your mother from? what can your mother do what ___is your mother do? what does your mother like? Her mother has an 〔〕ring Has your father agreed your sister____?