1.引导名词性从句的连词
（1）That，whether，if不充当句子成分的。
其
中that不仅没有充当句子成分，
而且没有词义，在句子中只起连接作用。而
if，whether虽然不充当句子成分，但有词
义，表示“是否”。如
He replied that he was going by train.
I wonder if it’s large enough.
二.从属连词是用来引导连接主句和从句的连词。 分为引导名词性从句的连词和引导状语 从句的连词。（分为连接代词和连接副词）
(1). that, whether, if 不充当成分.
(2). 连接代词 who, whom, which, what 充当主, 宾, 定, 表语等.
(3). 连接副词 when, where, how, why 状语.
Somebody borrowed my pen, but I don’t remember who.
He said he was our friend, yet he would help us.
4.表示因果关系的连词
so for thus(因此) therefore （因此）consequently（因而，所以） 1.The child has a bad cough, so his mother take him to the doctor. 2.You are supposed to get rid of carelessness, for it often leads to serious errors. 注意:for通常不能用于句首，也不能单独使用。
I worry about whether I hurt her feelings.
（2）连接代词who，whom，which，what充当主， 宾，定，表语等。
The boys who are playing football are from Class One.（充当主语）
He is not what he used to be.（充当表语） Which team has won the game is not known yet.（充当定语） He asked whom I borrowed the money from. （充当宾语）
If you will sit down for a few moments, I’ll tell the manager you are here.
(5). 让步:though/ although不与but连用. as(尽管), even if/ though (即使) however(无论怎样), whatever no matter how/ who/ which
(3). 连接副词 when, where, how, why
2. 引导状语从句的连词
(1). 时间: when, while, as 当…时 as+瞬间,延续性动词 “一边…一边” since, till/until, as soon
as(一…就), the moment/instant(一…就), Don’t talk while you are eating. She’s been playing tennis since she was eight. The moment I finish I’ll give you a call.
Although they are twins, they look entirely different. Whoever you are, you can’t pass this way. Whenever I see him I speak to him.
（6）.结果:So...that, such...that I went to the lecture so early that I got a good seat. （7）.目的:so that, in order that He raised his voice so that everyone could hear. （8）.方式：as（按照）, as if, as though Why didn’t you catch the last bus as I told you to.
*连 词
conjunction
小组成员：田焜鹏，韦栋，明谣
连词是一种虚词， 它不能独 立担任句子成分。用来连接词， 短语，从句与句子。
连词主要可分为两类： 并列连词 从属连词
一.并列连词表示词，短语， 从句或句子之间具有并列关系。 可以表示并列关系，转
(2). 原因: as because for since
For语气最弱, 引导的分句放在句末. Because 语气最强, 句首,句末均可. As(因为) 置于句首. Since(既然) 通常置于句首.
(3). 地点: where, wherever, anywhere I’ll take you anywhere you like.
2.He is a scientist as well as a poet.
3.Are they coming as well?
4.Both New York and London have traffic problems.
2.表示转折关系的连词:
but while (而, 虽然) yet (可是) however (而)
(4). 条件: if, unless= if… not, so/as long as, suppose(that)假使
Do you mind if I open the window?
Don’t come unless I telephone.
注意：在条件状语从句中，通常要用一般现在时 表示将来意义，而不能直接使用将来时态。不过， 有时条件的if后可能用will,但那不是表示将来时 态，而是表示意愿或委婉的请求。如：
and (和) both … and（和,两者都） or（或者） neither… nor（既不…也不…） not only… but also(不但… 而且…) as well as (和, 也, 除…外, 而且)
as well (也,而且,) 用于句末.
1.He is a scientist, but he is a poet as well.