yet和already的区别:
1)already一般用在完成时态的肯定句中。
Have you found your ruler yet?你已经找到尺子了吗?
I have already seen the film.我已经看过这部电影了。
We have already read the book. 我们已看过这本书。
already若用在疑问句中,常表示吃惊意外的语气。此时already常放在句末。
如:Have you had your lunch already?
Have you finished already? (我以为你没有做完,表示出乎意料。)
Well, have you forgotten already? Two weeks ago, it had a baby.
2)yet一般用在完成时态的否定句和疑问句中。
Have you found your ruler yet?你已经找到尺子了吗?
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