EXERCISE 3
Correct punctuation mistakes in each sentence by adding a semicolon or a full stop, or a comma plus a suitable coordinating conjunction:
1．Unmanned space probes (探测器) eliminate the risk of death, furthermore, they cost much less than manned space flight.
2．Praise is like sunlight, we cannot flower or grow without it.
3．It was May, snow still lay under the branches of the thick pines.
4．The price of serious illness has risen drastically(大幅度地)in recent years, for example some hospital rooms now cost a hundred pounds a day.
5．John is short and quiet, his roommate is tall and talkative.
6．The window kept banging all night, I couldn’t sleep a wink.
7．Reckless (鲁莽的) drivers would be severely punished, in fact they should lose their drivers’ permits for at least six months.
8．Jim liked to sample different kinds of food, I fixed some Chinese food for him.
9．Methods of studying vary, what works well for some students doesn’t work at all for others.
10．Philip was watching TV, Marie was upstairs on the phone.

（三）直接引语句的标点用法
1) 引述动词位于句首
引述动词+逗号／冒号+引语。例如：
Jim said: “I swim for an hour every day. ”
Tom said to his brother, “Put your toys away. Mom will be back soon.’’
2) 引述动词位于句中
引语+逗号／惊叹号／问号+引述动词+逗号／句号+引语
引语的第一部分若是一个完整句子，引语第二部分句首用大写字母，引述动词后用句号。例如：
“Just tell the boys to get busy, ” their father instructed. “They’re college men. They’ll do what they have to do.’’
“No! No!” I cried. “You can’t sell my books.”
如果引语的第一部分不是完整句子，则引语的第二部分以小写字母开始，引述动词后用逗号。例如：
“You sir, ” King Gustav of Sweden told Thorpe, “are the greatest athlete in the world.’’

3) 引述动词位于句末
引语+逗号／问号／惊叹号+引述动词。例如：
一“What offence?” I asked.
一“Theft, ” the policeman said.
“What a beautiful view!” she exclaimed.