Yet, Already
Yet (adv.)---"已经".与Already一样均用于谈论某一特定时间之前可能完成的某项动作.Yet只用于否定句和疑问句中.
Already (adv.)---"已经".常用于肯定的陈述句中,也可用于疑问句以表示惊奇.例:Has the bell rung yet? --- It has not rung yet.
已经敲钟了吗? --- 还没有.
I've started learning Greek, but I haven't got very far yet.
我已经开始学习希腊语,但只是刚刚入门.
John hasn't done much work yet, but Anne has already finished.
约翰还没做多少工作,可是安妮已经做完了.
Have you finished lunch already? It's only 12 o'clock.
你已经吃过午饭了吗? 刚刚12点.
Zero, Cipher, Nil, Nought
Zero (n.)---"零".普通用语.是指没有数量和大小等意义时人们喜欢用的词.
Cipher (n.)---"零".指0-9的任何一个阿拉伯数码,表示"无"时,具有象征意义.
Nil (n.)---"零".多用于体育或新闻领域.
Nought (n.)---"零".美语为naught,在字面意义上与cipher同义.