and 和 or的区别
问题描述：
and 和 or的区别
比如a and b 后面用is 还是are
那么or呢?是就近原则还是就远原则?
（如果前面出现不可数,后面出现可数复数and或or后面到底是用is还是are
那么and呢？
如果前面是可数名词复数后面是不可数名词，+are么？
答
are
就近原则
或,或者; 还是
A boy or two girls are at home.
一个男孩或两个女孩在家.
否则,要不然
Turn the heat down or your cake will burn.
把热度调低吧,要不蛋糕就要糊了.
也不
He cannot read or write.
他不会看书,
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.
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.
然后,接着
It came nearer and nearer.
那东西越来越近了.
而且,还,又
Mary was tall and fair.
玛丽是个高个子的金发女郎.