谁知道however, but, though , although, while ,as ,since, for, 的...答:Though he is rich, his life is not happy.他虽然很有钱,但生活并不幸福。副词 ad.1. (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。although连接词 conj.1. 虽然;尽管 Although he was ill, he worked hard.他虽然生病,但仍努力工作...