In spoken English, yet usually comes at the end of the sentence. 在英语口语中,yet 一般用于句子的末尾
I haven’t finished my homework yet.我还没有完成家庭作业。
It can also come after ‘don’t/do not’, ‘hasn’t/has not’, ‘isn’t/is not’ etc, or before ‘why’, ‘whether’ etc. 它还可以用于 don’t/do not,hasn’t/has not,isn’t/is not 等之后,或 why,whether 等之前
We do not yet have a solution to this problem.我们还没有找到这个问题的解决办法。
I haven’t decided yet whether to take part in the competition.我还没决定是否参加比赛。
When a past event is being referred to, yet is usually used with perfect tenses, but it can be used with the simple past tense in informal American English. 说到过去的事件,yet 一般和完成时连用,但是在非正式的美国英语中,它可以和一般过去时连用
Did Joe come back yet?乔回来了吗?
Yet is used to say that something has not happened or a situation has not started to exist, or to ask if something has happened. yet 用于表示某事尚未发生或某种情形尚未出现,或用于询问某事是否已经发生
It isn’t time to go yet.还没到走的时候。
Have you seen him yet?你见过他了吗?
This system of naming is still used today (NOT 不说 yet used today).这种命名系统今天仍在使用。
Still is used to say that an earlier situation has not changed. still 用于表示早前的情形没有变化
I still don’t understand.我还是不明白。
Already is used to emphasize that something has happened or a situation has started to exist. already 用于强调某事已经发生,或某种情形已经开始出现
He has already published two novels.他已经发表了两部小说。
They already knew one another.他们已经互相认识了。
It is also used in questions to show surprise that something has happened sooner than expected. already 也用于疑问句中,表示因某事的发生早于预料而感到吃惊
Have you been there already?你已经去过那里了?