① 两个词同义，一般情况下可以互换使用，如： He didn’t light the fire though / although it was cold. ② although 比though 较正式，语气较重，常用于强调让步概念，如： He insisted on doing it although I warned him not to. ③ though可以和even 连用，但although 不可以，如： Although (Even though) the traffic held us up, we got to the airport on time. ④ 当让步状语从句是指一种假设的情况，不指事实时，通常用though，而不用although，如： Though all the world were against me, I shall still hold to my opinion. ⑤ though可以在非正式文体中用作连接性状语，而although 则不行。（though 可以放在句中或句末，通常用逗号隔开），如： He said he would come; he didn’t, though.

1．although 和though 引导的让步状语从句：