You use though to introduce a statement in a subordinate clause which contrasts with the statement in the main clause. You often use though to introduce a fact which you regard as less important than the fact in the main clause.
双语例句
例： Everything I told them was correct, though I forgot a few things.
我告诉他们的全部正确，尽管我忘了几件事。
例： I like him. Though he makes me angry sometimes.
我喜欢他，尽管他有时惹我生气。