what
当what用作连接代词，引导名词性从句时，可引导主语从句、宾语从句；它本身在从句中充当主语、宾语或表语。

what 表示“所……的（事）”的意思。

TRANSLATION：
1.What you have done might do harm to other people.
2.She is no longer what she was five years ago.
3.Whether ways will be found to stop pollution or not is just what worries
the public.
4.What really matters is that she wore a pair of white shoes.
5.What he said at the meeting astonished everybody present.
6.What is most important in life isn’t money.
7.Whether ways will be found to stop pollution or not is just what worries
the public.
8.那些不能打败我们的必将让我们成长。

CHOICE:
1. After________ seemed a very long time, I opened my eyes and found myself in bed!
A. what
B. when
C. that
D. which
2. The tobacco which is used to make cigarettes was first grown in ________ is now
part of
the United States.
A. which
B. that
C. all
D. what
3. No longer______ Tom the man ______ he used to be.
A. will; what
B. was; what
C. will; that
D. is; that
4. What has made China ________ she is today?
A. that
B. what
C. as
D. which
5. The number of the students of the college has reached 8,000, twice ______ it was when the college was opened ten years ago.
A. what
B. as much
C. which
D. that
6. ________ she couldn’t understand was _______ fewer and fewer students showed interest in her lessons.
A. What; why
B. That; what
C. What; because
D. Why; that
7. “Is Mary from New York City” “I don't know _______.”
A. from what city does she come from
B. from what city she come
C. what city does she come from
D. what city she comes from
8. It worried her a bit ____ her hair was turning grey.
A. what
B. that
C. if
D. for。