and和or和but有什么区别
and、or和but的区别：
1、and意思是‘和，另外，还有，以及' 是一种同义词地位一样都要带上的意思。
2、or 是‘或者’的意思，是一种选择。
3、but 是转折的意思，可以理解为：但是，可是，而。
拓展资料
and
1、When he returned, she and Simon had already gone
他回来时，她和西蒙已经走了。
2、Learning becomes more and more difficult as we get older
随着年龄增长，学习变得越来越难。
3、I waved goodbye and went down the stone harbour steps
我挥手告别，然后走下港口石阶。
4、All through yesterday crowds have been arriving and by midnight thousands of people packed the square.
昨天陆续有大批人到来，午夜时有几千人聚集在广场上。
or
1、'Tea or coffee?' John asked
“喝茶还是喝咖啡？”约翰问道。
2、Items like bread, milk and meat were either unavailable or could be obtained only on the black market
像面包、牛奶和肉之类的东西要么是买不到，要么就是只能去黑市买。
3、Everyone benefited from limiting their intake of tea to just three or four cups a day
每天只喝三四杯茶对身体有益。
but
1、'You said you'd stay till tomorrow.' — 'I know, Bel, but I think I would rather go back.'
“你说过你要呆到明天的。”——“我知道，贝尔，但我还是想回去。”
2、They need to recruit more people into the prison service. But another point I'd like to make is that many prisons were built in the nineteenth century.
监狱需要招募更多的工作人员。但我想补充一点，很多监狱都是在19世纪建造的。
3、Please excuse me, but there is something I must say
不好意思，但有些话我必须说。
or 是‘或者’的意思,是一种选择.
but 是转折的意思,可以理解为：但是,可是,而.
and
连接词 conj.
1.和, 与, 及
He likes to play football and to sing popular songs.
他喜欢踢足球和唱流行歌曲.
2.那么, 则
He lost his health, and therefore his difficulties increased.
他身体虚弱, 因此更增加了他的困难.
3.然后, 接着
It came nearer and nearer.
那东西越来越近了.
4.而且, 还, 又
Mary was tall and fair.
玛丽是个高个子的金发女郎.
5. 加；加上
6. （用于动词前代替 to,表示目的）…为了
7. （连接相同的词,强调差别）与…不同
8. （引出说话或提问）那么,于是
but
连接词 conj.
1.但是, 然而
The watch was cheap, but it goes quite well.
这块表虽然便宜, 但走得很好.
2.而是
The purpose of the scheme is not to help the employers but to provide work for young people.
这个计划的目的不是为了帮助雇主, 而是为青年人提供工作机会.
3.除了, 除去
They never meet but they discuss this problem.
他们每次见面都讨论这个问题.
4.相当于that(用于否定结构后)
There is no doubt but that he will win the election.
毫无疑问, 他将在竞选中获胜.
5.(用于加强语气)
It'll be the event of the year—everyone, but everyone, is coming.
这将是一年中的大事——每个人, 对, 就是每一个人, 都会来.
6.(用于表示惊奇或其他强烈感受)
But that's outrageous!
啊, 这太可恶了!
7.只因为, 可是只有
No one is so old but he may learn.[No one is so old that he may not learn.
]活到老, 学到老.
8.假如没有…, 要不是
I would fail my exams but that the classmates help me with my lesson.
要不是同学们帮助我学习功课, 我考试就会不及格.
介词 prep.
1.[常用于 nobody,no one,all, who 等词后面]除…以外,除…外,除了
We go to school every day but Sunday.
我们除了星期日每天都上学.
副词 adv.
1.只, 仅仅
He's but a boy.
他只不过是个孩子.
2.不过,只不过
3.只是,刚才,方才
4.另一方面；还,尚,仍然[用来引导一个句子]
名词 n.
1. 借口；推辞
2.但是,反对,限制(用于表示反对,= buts)
代词 pron.
1.[关系代词,意义相当于 who…not; which…not]
及物动词 vt.
对…说“但是”
or
连接词 conj.
1.（用以引出另一种可能性）或,或者,还是
A boy or two girls are at home.
一个男孩或两个女孩在家.
2.（用于警告或忠告）否则,不然
Turn the heat down or your cake will burn.
把热度调低吧, 要不蛋糕就要糊了.
3.（用于否定句,提出两种或多种事物时）也不
He cannot read or write.
他不会看书, 也不会写字.
4.（用于两个数字之间表示约略数目）大约
5. （用于引出解释性词语）或者说
6.（用于说明原因）不然,否则
7.（用于引出对比的概念）
如：you and me :你和我.
you or me:你或者我
you but me :是你而不是我
