Group 03 Ante-before
“之前”
Group 04
Post -after“之后”
antecedents
n. pt. 祖先　
David's antecedents came to this country more than a hundred years ago.
大卫的祖先一百多年前来到这个国家。
anteroom
n. 接待室　
If the physician is busy when patients arrive, the nurse asks them to wait in the anteroom.
如果病人来的时候医生很忙，护士就请他们去接待室等候。
postmortem
n. 验尸　
The purpose of a postmortem is to discover the cause of death.
验尸的目的在发现死因。
postscript
n. 附笔　
After signing the letter, I noticed I had omited an important fact. therefore, I mentioned it in a postscript.
在信上签名后，我发漏掉了一件要紧的事，于是就把它记在附笔中。
antedate
vt. 1. 城写较实际更早的日期 2. 居先　
If you used yesterday's date on a check written today, you have antedated the check.
如果你在今日的支票上填写昨天的日期，你就提早了支票的日期。
Alaska antedates Hawaii as a state, having gained statehood on January 3, 1959, seven months before hawaii.
阿拉斯加在1959年1月3日成为美国的一州，比夏威夷早了七个月。
postdate
vt. 把日期填迟　
This a postdated check; it has tomorrow's date on it.
这张支票的日期填迟了，上面的日期是明天的。
ante meridiem
n. 上午；午前
Our classes usually begin at 8 a.m.
我们的课程通常在上午八点开始。
Post meridiem
n. 下午；午后　
At 4 p.m. the chairman announced the debate to be closed.
下午四点时主席宣布辩论结束。
postgraduate
adj. 毕业后的；研究所的　
After college, Mary hopes to do postgraduate work in law school.
大学毕业后，玛丽想在法学院从事研究工作。