although和though都是从属连词，引导让步状语从句，意为：虽然、尽管。在一句话中，用了although/though,不能再用but,但可用yet。例如： Although he is young, he is wise。他虽年轻，但很聪明。
Though it was snowing, I went out。尽管在下雪，我还是出去了。 although和though的区别是： 1) "Although"常置于句首，语气较though强，且正规，多用于书面语中。 2)though还可用作副词(=however),置于句尾，而although则不可。
如：She promised to come, yet hasn't turned up until now, though。 3)though可用于部分倒装句 式中，面although则不可。 如：Strange though it may seem, she still accepted the flower。
=Although it seems strange, she still accept the flower。 能引导让步从句的同义词组有： even if和even though意为：即使，即令……也……； even if的从句中含有强烈的假定性，even though则多以从句之内容为前提。
Even if I have to sell my house, I'll keep my business。即使我卖掉房子，我还是要继续我的事业。 Even if he is poor, she loves him。(=He may be poor, yet she loves him。
) 即使他很穷，她还是爱他。 Even though he is poor, she loves him。 (=He is poor, yet she loves him。) 尽管他穷，她还是爱他。 as作连词，也可引导让步从句，但须用倒装式。
例如： Child as he is, he knows a lot。他尽管是孩子，但懂得很多。 Young as she is, she works very hard。她尽管年轻，但很勤奋。 Much as I love it, I will not buy it。
尽管我喜欢它，但不想买下它。 Praised as he was, he remained modest。他虽受到表扬，但他仍然谦虚。 Manage as we might, we could not get out of the difficulty。
尽管我们努力，还是不能走出困境。 Try as you will, you won't work it out。尽管你要试试，你不会做出来的。 （摘自网上，供参考。） 。
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