although/ though/ even though/ even if / as/ no matter+疑问词 / 疑问词-ever都表示这种意思引导让步状语从句
Although/Though he was worn out, (still) he kept on working. 虽然他已经精疲力竭了，但仍然继续工作。
Although/Though he is very old, (yet) he is quite strong. 他虽然年纪大了，身体还很健壮。
We’ll make a trip even if/though the weather is bad. 即使天气不好，我们也要作一次旅行。
Even if he is poor, she loves him. (=He may be poor, yet she loves him.)即使他很穷，但她还是爱他。
Even though he is poor, she loves him. (=He is poor, yet she loves him.)尽管他很穷，但她还是爱她。
No matter what happened, he would not mind. (=Whatever happened, he would not mind.)无论发生了什么，他都不会介意的。
No matter who you are, you must keep the law.(=Whoever you are, you must keep the law.不管你是谁，你都要遵纪守法。
as引导的让步状语从句必须以部分倒装的形式出现，被倒装的部分可以是表语、状语或动词原形，though也可用于这样的结构中，但although不可以这样用。例如：
Object as you may, I’ll go.(=Though/Although you may object, I’ll go.) 纵使你反对，我也要去。
Hard as/ though he works, he makes little progress. (=Though he works hard, he makes little progress.)尽管他学习很努力，但几乎没取得什么进步。
Child as/though he was, he knew what was the right thing to do.（=Though he was a child, he knew what was the right thing to do.）虽然他是一个孩子，但他知道该做什么。
Fast as you read, you can’t finish the book so soon. 纵然你读得快，你也不能这么快读完这本书。
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