根据意思来说 应该是unless
though有两个词性,副词(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.
连词 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.
放中间显然不符合任何一种词性,意思也不同.好歹要用逗号隔开
根据意思来说 应该是unless
though有两个词性,副词(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.
连词 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.
放中间显然不符合任何一种词性,意思也不同.好歹要用逗号隔开