2、though 前面可加 even 加強語氣，但是 although 不能。
3、although 相對較正式，可以放句中子或句首。though 因為身兼連接詞和副詞，則可以放在句首、句中或句末。
★ (Although/Though/Even) though we all done our best, we lost the game.
★ Even though he is 24, he is still like a little child.
★ I could have asked her out; it's too late now, though.
★ He had promised to come. He didn't show up, though.
★ My ex-GF only gave me a quick glance when he walked past me. It was as though we had never met before.
★ Even though he left school at 16, he still managed to become a successful businessman.