- 并列连词用于连接并列的单词、短语、句子和从句。如：and, or, but, yet, while等；如：
He looks young, but in fact he is 50 years old. 他看起来很年轻，但事实上他已经五十岁了。
I have failed, yet I will try again. 我失败了，但我还要尝试。
My sister likes sports, while I like reading. 我姐姐喜欢运动，而我喜欢阅读。
- 从属连词主要引出名词性从句（主语从句、宾语从句、表语从句）和状语从句（时间状语从句、条件状语从句、目的状语从句等）。引出名词性从句的连词如：that, whether；引出状语从句的连词如：when, till, until, after, before, as soon as, since, because,so, if, though, although的用法。如：
Whether he will come is still a question. 他能不能来还是个问题。
We waited until he came. 我们一直等到他来。
Remember to turn off all the lights before you leave. 离开前记得关闭所有的灯。
I will call you as soon as I arrive at your city. 我一到达你的城市就给你电话。
We will go swimming if it doesn’t rain tomorrow. 如果明天不下雨，我们将去游泳。
Tom failed in his exam though he worked hard before the exam. 汤姆考试没通过，尽管考前他很努力。
（ ）1．Do you like playing basketball _____ football?
A．and B．but C．or D．so
（ ）2．He is _____ a teacher _____ a doctor. He is a writer.
A．neither; nor B．both; and C．either; or D．either; nor
（ ）3．They were tired _____ happy after a whole day’s work.
A．and B．or C．but D．though
（ ）4．The topic of the book is so boring, _____ I don’t want to read it.
A．but B．though C．or D．so
（ ）5．They didn’t realize their fault _____ we pointed it out to them.
A．unless B．when C．to D．until
（ ）6．I’ll let you know _____ I have news.
A．for B．because C．since D．as soon as
（ ）7．_____ the weather is fine, we won’t go out.
A．Because B．If C．Unless D．When
（ ）8．_____ you like classic music, you can go to that concert.
A．If B．Once C．When D．While
（ ）9．I want to know _____ he can be here on time.
A．who B．when C．where D．if
( )10.The boy did_____his father had told him to do.
A.which B.that C.what D.who