副词

连词

1. （用于否定句中表示某事尚未发生但有可能发生，在疑问句中用来询问某事是否已发生。英国英语中，表示此义时通常不与一般过去时连用）尚（未），还，仍
You use yet in negative statements to indicate that something has not happened up to the present time, although it probably will happen. You can also use yet in questions to ask if something has happened up to the present time. In British English the simple past tense is not normally used with this meaning of 'yet'.

2. （与谈论过去的否定句连用，表示当时并非如此）还，尚（未）
You use yet with a negative statement when you are talking about the past, to report something that was not the case then, although it became the case later.

In British English, yet and already are usually used with the present perfect tense. Have they said sorry or not yet?... I have already started knitting baby clothes. This usage is becoming more common in British English. In American English, a past tense is commonly used. I didn't get any sleep yet... She already told the neighbors not to come.
英国英语中，yet和already通常用于现在完成时。例如，Have they said sorry or not yet（他们是否已经道过歉了），I have already started knitting baby clothes（我已经开始织婴儿衣服了）。这种用法在英国英语中越来越普遍。在美国英语中，一般使用过去时：I didn't get any sleep yet（我还没合过眼），She already told the neighbors not to come（她已经告诉邻居们不要过来了）。

1. to a greater degree or extent
used with comparisons

e.g. looked sick and felt even worse
an even (or still) more interesting problem
still another problem must be solved
a yet sadder tale

Synonym: evenstill

2. despite anything to the contrary (usually following a concession)

e.g. although I'm a little afraid, however I'd like to try it
while we disliked each other, nevertheless we agreed
he was a stern yet fair master
granted that it is dangerous, all the same I still want to go

Synonym: howeverneverthelesswithalstillall the sameeven sononethelessnotwithstanding

3. up to the present time

e.g. I have yet to see the results
details are yet to be worked out

4. used in negative statement to describe a situation that has existed up to this point or up to the present time

e.g. So far he hasn't called
the sun isn't up yet

Synonym: so farthus farup to nowhithertoheretoforeas yettil nowuntil now

5. used after a superlative

e.g. this is the best so far
the largest drug bust yet

Synonym: so far

6. within an indefinite time or at an unspecified future time

e.g. he longed for the flowers that were yet to show themselves
sooner or later you will have to face the facts
in time they came to accept the harsh reality

Synonym: in time