5. In some places women are expected to earn
money __w__h_i_l_e__ men work at home and raise
their children. (四川)
6. You have failed two tests. You’d better start
相对地，“because”就用于指对方或读者不知的原因，是引起某事的 直接原因 。 例：—Why were you late for school this morning?
—Because I had an accident on my way to school．
若两个句子(有两个主谓结构)之间，没有句号或分号， 也没有连词，那空格处必定是填连词，否则，句子结构就 不完整。根据两句之间的意义和逻辑关系，或者根据句式 结构，确定是并列句还是某种主从复合句。然后根据某种 从句的特点，结合连词的意义和作用，确定填具体的某个 连词。
He is absent today, _b_e_ca_u_s_e _/ f_o_rhe is ill. He must be ill, _f_o_r __ he is absent today.
3） since 的语气比 as 强。since和as引导的从句一般放在句子的开头。 since通常指说话双方已知的原因， 意为“既然”；
时间 状语 从句
when，while（在…期间），as（当…，一边…一 边…），before（在…之前），after（在…之后）， since（从…以来），till/until（直到），
whenever（无论何时），as soon as（一…就）
地点状 where (在…的地方)，wherever(在…的任何地方)
or(或者，否则), otherwise(否则), or else(否则), either...or(不是……就是)
but(但是，可是，只是因为), yet(可是), not…but…(不是……而是……)
while(而、却)
for（因为）和so（所以，因此）
昨天提到的thus, therefore 和consequently都是连接副词，用来 连接句子或者从句，基本上可以互换，没有太大的差异，意为 “因此”。
方式状 as(正如)，as if或as though(好像) 语从句
连接词when, while, as的用法区别： 1．while引导的时间状语从句的谓语动词必须是可 延续的，而when引导的时间状语从句的谓语动词 既可以是可延续的，也可以是表短暂性动作的动词。 如：
When/While he was eating his breakfast, he
随着选举的临近，暴力活动变得越来越糟糕了。
4．如果主句表示的是短暂动作，而从句用延续性 动作的进行时态表示在一段时间内正在进行的动 作时，when, while与as 可互换使用。如：
When/While/As I was walking down the street, I came across an old friend of mine.
语从句 that (为了，以便)；in case(以防，以免), lest
(免得，以防), for fear that(以免，惟恐)
结果状 so that（以致，结果），so…that, such…that（如 语从句 此……以至于）
条件状 语从句
if, unless (=if…not如果不……，除非), as/so long as(只 要), while(=as long as只要), supposing (that)/provided /providing (that)(假如), in case(假使), on condition that(在……的条件下)
review
while 用作并列连词，意为“而……”，表 示对比。
He likes pop music while I am fond of country music.
He was playing the guitar while his sister was watching TV.
巩固：用适当的连词填空。
专项复习一
连词
conjunction
考点1：并列连词 考点2：引导状语从句的连词 考点3：引导名词性从句的连接词
考点1：并列连词
表示并列
表示选择 表示转折 表示对比 表示因果
and(同，和), when(=and just at this time就在这时), not only…but (also)…(不仅……而且……), neither…nor…（既不……se(因为), as(由于), since(既然), now (that)
语从句 (既然), when(既然), seeing (that) (由于，鉴于), considering (that)(考虑到), given (that) (考虑到)
目的状 so(以便), that(以便), so that(以便，为了), in order
状语从句课堂巩固练习
1. I’m sorry you’ve been waiting so long, but
it’ll still be some time ___b_e_fo_r_e___ Brian gets back. (北京)
2. The research will take Joan and Paul about five months; it will be a long time _b_e_fo_r_e_ we meet them again. (安徽)
heard the doorbell ring.
When I stopped my car, a man came up to me. (不可用while) 2．从句动作发生在主句动作之前时，只能用when引 导这个从句，不可用as或while。如：
When you have finished your work, you may
并列句
1. I thought you’d be late for the concert,
__b_u__t_ we ended up getting there ahead of
time. (湖南)
2. Stand over there _a_n__d__ you’ll be able to
see the oil painting better. (全国Ⅱ)
对比训练 1
1. __A__ he heard this, he got very angry.
2. I met Lucy__B__ I was walking along the river.
3. __C__ a child, he lived in the countryside. A. when B. while C. as
让步状 语从句
比较状 语从句
although, though, as, while(虽然), even if/though(即使), whether…or…(不论/不管……还是……) 以及
“疑问词+ever”和“no matter+疑问词”
as...as（和……一样），not as/so...as（和……不一 样），than（比），the more...the more（越……越）
working harder, ______ oyrou won’t pass the
course. (北京)
7. Reality is not the way you wish things to be,
nor the way they appear to be, __b_u_t__ the way
3. -- Did you return Fred’s call?
-- I didn’t need to ___b_ec_a_u_s_e__ I’ll see him tomorrow. (北京)
4. -- Why didn’t you tell him about the
meeting?
-- He rushed out of the room _b__e_f_o_r_e___ I
3. He found it increasingly difficult to read,
__f_o_r__ his eyesight was beginning to fail. (山
东)
4. The artist was born poor, _a__n_d__ poor he
remained all his life. (重庆)
A. when B. while C. as D. during
比较：because, for , since和as
1）because是我们最常见到的，它所表示原因的语气最强， 表示直接原因 ，它所引导的从句一般放在主句后面。 because用于回答why的问句、引导表语从句、用于强调句 等，而其余三者均不行。
而 “as”常表示“已为人们所知或显而易见的原因或理由”。
意为 “因为”或“正如”。
__S_in_c_e__he had not paid his bill, his electricity was cut off． （既然他不付电费，他的电就被切断了。）
S_in_c_e_ you are wrong, you should apologize. 你既然错了，就应该道歉。 _A__s_ we all know, the earth is round. 正如我们所知道的，地球是圆的。 __A_s__ he’s been ill for ages, I will help him.
6. You’d better not leave the medicine