The film must be very interesting, many people are buying tickets in line.——青夏教育精英家教网—

2.　　　 The film must be very interesting, ________ many people are buying tickets in line.

(1)表示选择关系的连词，连接的双方只取其一。常用连词有or, either...or, otherwise

例如：

1)You can go to Beijing either today or tomorrow

　 2)You must get up early or you won’t catch the early bus.

(2)表示转折关系，连接的双方构成对比，意义上有转折。常用连词有but, however, while, only

　例如：

1)　 His brother is fond of football while he likes basketball.

2)　 You can watch TV, but you must finish your homework first.

(3)表示联合关系，联合的双方是对等的，意义上趋向一致。常用连词有：and, both...and, neither...nor, not only...but also, as well as, together with

　例如：

1)　 To study English well, we need both diligence and careful.

2)　 That horse is not only the youngest among the five, but also runs the fastest.

(4)表示因果关系，连接的双方，互为因果，或者前因后果，或者前果后因。常用的连词有：for, so, therefore

　例如：

1)　 It must have rained, for the ground is wet.

2)　 You are in the right, therefore they should support you.

第三节巩固练习

I. 填入适当的连词。

1.　　　 My brother is ill, ________ I have to stay at home.

例1	he did not know much English，he got out his dictionary and looked up the word.
	A．	As	B．	For
C．	Since	D．	Because
答案：	A
提示：	for，because和as虽皆可作连词用，表示“因为”，但用法有些区别。for引导的分句总是置于另一分句之后，常常对前一分句加以解释，两个分句之间，总是用逗号分开。because引导的原因状语从句时，往往以why问句，语气比较重，传递的往往是对方未了解的新信息。as引导的原因状语从句时，往往是对方也知道的信息。本句是他拿出词典查，显然，“他知道的英语单词不多”，这是明摆着的事，所以用as最恰当。
例2	you don't feel well，you'd better stay at home．
	A．	Because	B．	Since/If
C．	For	D．	Now
答案：	B

例3	I don’t know 　　　　　he has received the package.
	A．	if	B．	when
C．	what	D．	how many
答案：	A
提示：	if表示是否，when不能与现在完成时连用。
例4	Come tomorrow, 　　　　　I will give it to you.
	A．	or	B．	and
C．	though	D．	if
答案：	B
提示：	and在此处解释为“那么”，表示递进关系。
例5	The teacher 　　　　　　his students likes football.
	A．	and	B．	as well as
C．	and also	D．	also
答案：	B
提示：	as well as 连接两个主语用靠前原则。
例6	We were having lunch 　　　　　some one knocked at the door.
	A．	as	B．	a soon as
C．	when	D．	while
答案：	C
提示：	when在这里解释“就在那时”