positive: and和or 的区别和用法<br>1) 并列结构中,or通常用于否定句,and用于肯定句。<br>2) 但有时and 也可用于否定句。请注意其不同特点:<br>There is no air or water in the moon.<br>There is no air and no water on the moon.<br>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。<br>典型例题<br>---I don't like chicken ___ fish.<br>---I don't like chicken, ___ I like fish very much.<br>A. and; and B. and; but C. or; but D. or;and<br>答案C。否定句中表并列用or, but 表转折。<br>判断改错:<br>(错) We will die without air and water.<br>(错) We can't live without air or water.<br>(对) We will die without air or water.<br>(对) We can't live without air and water.
negative: 选A,不用加冠词,在这里又不是特指,而且一般more前若加the,就构成了the more ....the more...结构了