2) 但有时and 也可用于否定句。请注意其不同特点: There is no air or water in the moon. There is no air and no water on the moon. 在否定中并列结构用or 连接,但含有两个否定词的句子实际被看作是肯定结构,因此要用and。
典型例题 ---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 表转折。
判断改错: (错) We will die without air and water. (错) We can t live without air or water. (对) We will die without air or water. (对) We can t live without air and water.