英语语法:and与or的用法
是or 吧
摘要:中考英语语法中,关于and和or的用法,一般情况下,and用在肯定句中,or用在否定句中,但是有时候and和or也可以互换.
1.是否定句之后通常用 or 代替 and.如:
He spoke loudly and clearly.他说话声间宏这且清晰.
He didn’t speak loudly or clearly.他说话声音不大且不清晰.
2.祈使句+and =if,而祈使句+or = unless.如:
Work hard,and you will succeed.(=If you work hard,you’ll succeed.) 努力工作,你就会成功.
Work hard,or you won’t succeed.(=Unless you work hard,you won’t succeed.) 努力工作,否则你就不会成功
3.有时 and 与 or 可换,如:life and / or death (生死);有时 and no 与 or 互换.如:
He has no brothers and no sisters = He has no brothers or sisters.他没有兄弟姐妹.
4.在选择疑问句中,用 or 不用 and.如:
Is it a pen or a pencil? 那是钢笔还是铅笔?
Which is bigger,the sun or the earth?太阳和地球哪个大?
5.在 both 之后用 and,在 either 之后用 or.如:
Both you and he are right.你和他都是对的.
Either you or he is right.不是你对就是他对.