ro在英语语法怎么读

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  • 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.