解释一下什么是让步状语从句，举一下例子

让步状语从句 通俗一点说： 比如though或者even though可以引导让步状语从句.举个例子吧, Though he studies English very hard, he cannot learn it well. 即使他努力学英语了,可他就是学不好. 让步语气就是这么来的.句子中我想说he英语学得不好.但我一这么说,别人会觉得可能会觉得he已经很努力了,反而劝我不要强求别人.所以我先让一步,先承认他努力的这一事实,然后再导出我想表达的意思.注意后半句的意思与前半句在感情基调上相反. 正式一点说： 常用引导词：though, although, even if, even though 特殊引导词： as(用在让步状语从句中必须要倒装)，while ( 一般用在句首 )，no matter …， in spite of the fact that, while, whatever, whoever, wherever, whenever, however, whichever Much as I respect him, I can’t agree to his proposal. 尽管我很尊敬他， 我却不同意他的建议。 The old man always enjoys swimming even though the weather is rough. No matter how hard he tried, she could not change her mind. He won’t listen whatever you may say.

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