Though / although

Though/although normally introduce clauses of concession.

• Though/Although they're very rich, they still want more money.

Another use of though (but not although!) is linking two main clauses.

though used in this way means  "yet" or  "but" and is placed at the beginning but more often at the end of its clause: 

• She says she will reward me for my efforts, though I don't think she will or She says she'll reward me for my efforts; I don't think she will, though.