yet

but, however, still, yet, nevertheless, while, whereas

still, yet

副词 yet:

1. up to the present time
2. used in negative statement to describe a situation that has existed up to this point or up to the present time
   同义词：so far, thus far, up to now, hitherto, heretofore, as yet, til now, until now
3. to a greater degree or extent; used with comparisons
   同义词：even, still
4. within an indefinite time or at an unspecified future time
   同义词：eventually, sooner or later, in time, one of these days
5. used after a superlative
   同义词：so far
6. despite anything to the contrary (usually following a concession)
   同义词：however, nevertheless, withal, still, all the same, even so, nonetheless, notwithstanding

1. She is vain and foolish, and yet people like her.
   她自负而愚蠢，然而人们喜欢她。
2. He hasn't done much yet.
   他做的还不很多。

yet

adv.（副词）
At this time; for the present:
现在；目前：
例句：
isn`t ready yet.
现在还没准备好

Up to a specified time; thus far:
迄今：直至一特定时间；至今：
例句：
The end had not yet come.
到目前为止还没有结果

At a future time; eventually:
将来；终必：
例句：
may yet change his mind.
终究会改变他的想法

Besides; in addition:
另外；除此以外：
例句：
returned for yet another helping.
尚且还了一份礼

Still more; even
更，甚至：
例句：
a yet sadder tale.
一个更悲伤的故事

Nevertheless:
然而：
例句：
young yet wise.
年轻却很聪明

conj.（连接词）
And despite this; nevertheless:
仅管如此，虽然：
例句：
She said she would be late, yet she arrived on time.
她说她会迟到，但她却准时到达了

<习惯用语>as yet
Up to the present time; up to now.
迄今
来源：
Middle English
中古英语
from Old English goet * see i-
源自 古英语 goet *参见 i-

In formal styleyet in the sense .up to now. requires that the accompanying verb be in the present perfect, rather than in the simple past:
在正式文体中，yet 表达.迄今.这一意思时，须与现在完成时动词连用， 而不是简单的过去时：
例句：
He hasn`t started yet, not He didn`t start yet.
他还未开始而不是 他未开始