一般情况however都是和but区别使用的.
辨析 however和 but
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
1.however比but用的场合更正式,so however用于书面语,而but 常用于口语.
2.however后有"," 而but 没有
3.另外,however的意思还不只局限于"但是;然而"
这个就靠平时积累了
Good luck!