一、名词（无冠词）+as / though +主 +谓( 通常为be动词 ) 1. Though /Although he is a child, he knows five foreign languages. = Child as /though he is, 2. Though /Although he is a strong man,he gave up. =Strong man as /though he is, he gave up.,二、形容词+as / though +主 +谓( 通常为连系动词 ) 1. Clever as /though he is, he couldnt pass the exam. 2. Stupid as /though it sounds，I believed her.,三、副词+as / though +主 +谓 1. Fast as /though you read, you cant finish the book in two days.,A strong man as /though he is, he gave up.,,四、动词原形+as / though +主 +谓( 通常为情态动词或助动词 ) 1. Try as /though he might, he couldnt solve the problem. 2. Lose as /though I did, I got a lot of experience.,五、分词+as / though +主 +谓 1. Raining as /though it is, Im going out for a walk. 2. Criticized as /though he was, he didnt discourage.,注意： although引导让步状语从句时不能倒装，as引导让步状语从句时必须倒装，而though引导让步状语从句时可以倒装也可以不倒装。