although和though有什么不同？

though.although两个词都可以作连词，引导让步状语匆遽，意思是“虽然……但是”在英语里如果用了这两个词，则不能再用but ，但可以用yet 或者still

Although比较正式， 多用于句首。
Though在非正式语体中较为普遍，但在下列用法中，不能用ALTHOUGH，只能用THOUGH。
1.表示强调时候要even though
Even though i didn't understand a word,i kept smiling.
尽管我一个字也不懂，我还是一直微笑着。
2.though可以用在倒装句中
Young though he is ,he is quite experienced.
他虽然年轻，但很有经验。
3.though可以用做副词，表示“然而” ，放在句子末尾或其他位置。
He said he would come ,he didn't ,though.
他说他要来，结果却没有来。