1.月球上既没有空气也没有水。[误]There is no air and water on the moon. [正]There is no air and no water on the moon. [正]There is no air or Water on the moon. [析]连词and常用在肯定句中连接并列的词或词组。在否定句中并列成分的连接应用or。2.玛丽是个好姑娘,但她上学经常迟到。[误]Mary is a good girl,and she is often late for
