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连词
在句子中起连接作用，可以使词、短语或句子连接起来形成一定关系的词。
一、连词的用法
并列连词
（1）and：“和，并且”表示并列
（2）both...and: “两者都......”表示连接
（3）or: “或者，还是”表示选择，“否则”
（4）but: “但是”表示转折
（5）so: “所以”表示结果
从属连词
（1）because: “因为”，表示原因，提问时用why
1
2
3．Which is bigger, this one _________ that one?
4．Both my father ________ my mother are doctors.
5．---Why are you late today? ---________ I can’t catch the bus.
6．Lily is ill, _______ she doesn’t go to school.
二.单项选择
1. She stood up ________ went out.
A. and
B. or
C. so
D. but
2. Who is right, Jacky ________ John?
A. and
B. but
C. so
D. or
3. He is clever, ________ he is lazy.
A. but
B. and
C. so
D. or
4. It is raining outside, _______ I have to stay at home.
A. so
B. and
C. but
D. or
5. I help him ______ he helps me. We help each other.
A.but
B.and
C.or
D.so
6. Jack was very hungry ______ he ate all the cakes.
A.and
B.but
C.so
D.or
7. Hurry up, ______ we’ll be late for the concert.
A.and
B.but
C.so
D.or
8. He got up late this morning, ______he was late for school.
A.so
B.but
C.while
D.yet
9. He has no brothers _______ sisters.
A.and
B.but
C.or
D.so
