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初三年級上冊英語語法2016

時間:2016-12-01 15:16:00   來源:無憂考網(wǎng)     [字體: ]
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.