原因状语从句主要的有although, though, even though, even if, while, however, whatever, whoever, whenever, wherever等。如： Although [Though] he is poor, he is well contented. 他虽穷却能知足常乐。Though [Even though] it’s hard work, I enjoy it. 尽管是苦活，但我乐意干。Even if you don’t like wine, try a glass of this. 即使你不喜欢喝酒，也尝尝这杯吧。While we don’t agree we continue to be friends. 尽管我们意见不同，但我们还是朋友。However you use it, it won’t break. 不管你怎么使用，它都不会破。Whatever you say, I believe you. 无论你说什么，我都相信你。Whoever telephones, tell them I’m out. 不管是谁打电话，都说我出去了。Whenever you come, you are welcome. 你什么时候来，我们都欢迎。However much he eats, he never gets fat. 无论他吃多少, 他都不发胖。