1) but表示轉(zhuǎn)折，while表示對比。
Some people love cats, while others hate them.
典型例題
--- Would you like to come to dinner tonight?
--- I'd like to, ___ I'm too busy.
A. and B. so C. as D. but
答案D。but與前面形成轉(zhuǎn)折，符合語意。而表并列的and， 結(jié)果的so，原因的as都不符合句意。
2) not…but… 意思為"不是……而是……"
not 和but 后面的用詞要遵循一致原則。
They were not the bones of an animal, but (the bones) of a human being.
比較and和or
1) 并列結(jié)構(gòu)中，or通常用于否定句，and用于肯定句。
2) 但有時and 也可用于否定句。請注意其不同特點：
There is no air or water in the moon.
There is no air and no water on the moon.
在否定中并列結(jié)構(gòu)用or 連接，但含有兩個否定詞的句子實際被看作是肯定結(jié)構(gòu)，因此要用and。
典型例題
---I don't like chicken ___ fish.
---I don't like chicken, ___ I like fish very much.
A. and； and B. and； but C. or； but D. or；and
答案C。否定句中表并列用or, but 表轉(zhuǎn)折。
判斷改錯：
(錯) We will die without air and water.
(錯) We can't live without air or water.
(對) We will die without air or water.
(對) We can't live without air and water.
Some people love cats, while others hate them.
典型例題
--- Would you like to come to dinner tonight?
--- I'd like to, ___ I'm too busy.
A. and B. so C. as D. but
答案D。but與前面形成轉(zhuǎn)折，符合語意。而表并列的and， 結(jié)果的so，原因的as都不符合句意。
2) not…but… 意思為"不是……而是……"
not 和but 后面的用詞要遵循一致原則。
They were not the bones of an animal, but (the bones) of a human being.
比較and和or
1) 并列結(jié)構(gòu)中，or通常用于否定句，and用于肯定句。
2) 但有時and 也可用于否定句。請注意其不同特點：
There is no air or water in the moon.
There is no air and no water on the moon.
在否定中并列結(jié)構(gòu)用or 連接，但含有兩個否定詞的句子實際被看作是肯定結(jié)構(gòu)，因此要用and。
典型例題
---I don't like chicken ___ fish.
---I don't like chicken, ___ I like fish very much.
A. and； and B. and； but C. or； but D. or；and
答案C。否定句中表并列用or, but 表轉(zhuǎn)折。
判斷改錯：
(錯) We will die without air and water.
(錯) We can't live without air or water.
(對) We will die without air or water.
(對) We can't live without air and water.