英语：however与but区别?详细!

二者都意为“可是,但是”；
but是并列名词,连接两个并列分句,上下二句在总的意义上构成了对比.
I really don't like cheese,but I will try just a little this time.我实在是不喜欢吃奶酪,但是这次我要尝一点.
however不能直接连接两个分句,必须另起新句,并用逗号隔开.
It was raining hard.However,we went out to look for the boy.雨下得很大,不过我们还是出去寻找那个孩子
but 口语常用词,语气较强,泛指与前述情况相反.
however 表转折关系,语气稍弱于but,连接性也弱一些,因而常作插入语.