already、yet、ever分别用于什么句?就是它们分别用于肯定句、否定句、疑问句的.

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already、yet、ever分别用于什么句?就是它们分别用于肯定句、否定句、疑问句的.
already、yet、ever分别用于什么句?
就是它们分别用于肯定句、否定句、疑问句的.

already、yet、ever分别用于什么句?就是它们分别用于肯定句、否定句、疑问句的.
already 用于完成时态的肯定句.表示“已经”
例如:I have already finished my homework.
He has done it already.
yet 多用于疑问句和否定句,表示“还”
例如:
Have you finished your homework?
No,not yet.I have not yet finished my homework.
Yes,I have already.
ever 多用于疑问句,表示“曾经”.
Have you ever been to Beijing?
否定句用“never".
I have never been to Beijing.