連詞
I． 要點
1、 連詞的種類
（1） 并列連詞用來連接并列關(guān)系的詞、短語或分句，如and, for, or, both…and, either…or, neither…nor等。
（2） 從屬連詞用來引導從句，如that, if, whether, when, after, as soon as等。
除了從屬連詞（引導狀語從句）外，還有其它可以用來引導從句的詞類。它們是連接代詞和連接副詞（引導名詞性從句），關(guān)系代詞和關(guān)系副詞（引導定語從句）。
2、 常用連詞舉例
(1)and 和，并且
They drank and sang all night.
(2) both…and 和， 既…也…
Both my parents and I went there.
(3) but 但是，而
I'm sad, but he is happy.
(4) either…or 或…或…， 要么…要么…
Either you're wrong, or I am.
(5) for因為
I asked him to stay, for I had something to tell him.
(6) however 然而，可是
At first, he didn't want to go there. Later, however, he decided to go.
(7) neither…nor 既不…也不
Neither my parents nor my aunt agrees with you.
(8) not only…but (also) 不但…而且…
He not only sings well, but also dances well.
(9) or 或者，否則
Hurry up, or you'll be late.
Are you a worker or a doctor?
(10) so 因此，所以
It's getting late, so I must go.
(11) although 雖然
Although it was late, they went on working.
(12) as soon as 一 …就
I'll tell him as soon as I see him.
(13) because 因為
He didn't go to school, because he was ill.
（14）unless 除非，如果不
I won't go unless it is fine tomorrow.
（15）until 直到…
He didn't leave until eleven. (瞬間動詞用于not… until 結(jié)構(gòu))
He stayed there until eleven.
（16）while 當…時候，而 (表示對比)
While I stayed there, I met a friend of mine. (while后不可用瞬間動詞)
My pen is red while his is blue.
（17）for 因為
He was ill, for he didn't come. (結(jié)論是推斷出來的)
（18）since自從…
I have lived here since my uncle left.
（19）hardly… when 一… 就
I had hardly got to the station when the train left.
（20）as far as 就… 來說
As far as I know, that country is very small.
You may walk as far as the lake. (一直走到湖那里)
II． 例題
例1 John plays football ____, if not better than, David.
A as well B as well as C so well D so well as
解析：該題意為：John踢足球如果不比David好的話，那也踢得和David一樣好。 和…一樣好為as well as. 故該題正確答案為B。
例2 She thought I was talking about her daughter, ____, in fact, I was talking about my daughter.
A when B where C which D while
解析：該處意為"然而"，只有while有此意思，故選D。
例3 Would you like a cup of coffee ____ shall we get down to business right away?
A. and B. then C. or D. otherwise
