though
1.虽然;尽管
Though he is rich,his life is not happy.
他虽然很有钱,但生活并不幸福.
2.(一般放在句尾)然而,还是
It was a hard job,he took it though.
这是份苦差事,可他还是接受了.
however
1.然而,可是,不过
I feel a bit tired.However,I can hold on.
我有点累了,但我能坚持下去.
2.无论如何,不管怎样
However hot it is,he will not take off his coat.
无论多热,他也不会脱掉外衣.
3.不管用什么方法
However he tries,he never seems able to work satisfactorily.
不管他怎么努力,他好像总不能令人满意地工作.
4.究竟怎样,到底如何
However did you know that?
你到底怎么知道那件事的?
however后+句子,要用,隔开；though不用