题目内容
2.We can't livewithout water andair.DA B C D.
分析 没有水或空气,我们就无法生存.
解答 答案:D 根据前文we can't live我们不能生存,是一个否定句,并列结构中,or通常用于否定句,and用于肯定句.故用连词or,表示或者,故D项错误.
点评 并列结构中,or通常用于否定句,and用于肯定句.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.
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