though在句末是人副词,意思是：adv.可是,不过；然而。例如：How do you know what to buy,though?但是,你怎么知道该买哪份报纸呢?
1）though 用在句首，表示“虽然…”
Though I’m very tired, I still have to work.
虽然我很累，但我仍得工作。
2）though 用在句末，表示“但是”
①
-Do you want me to get you a cup of coffee?要帮你那杯咖啡吗？
-No, I'm good. Thank you though.
哦，不用，不过还是要谢谢你。
② We lost the game. We tried our best though.
我们虽然输了，但真的尽力了。
③He didn’t pass the exam. He studied very hard though.他考试挂了，但他学得很努力。
3）though 放句首和句末区别:
though 放句首，解释为“虽然”，放句末，解释为“但是”，转折句重心永远在“但是”上。
①We lost the game. We tried our best though.（强调“我们尽力了”）
②Though we tried our best, we lost the game.（强调“我们输了比赛”）
