尽管他小，他却知道应该做什么。

　　(2)as和though引导的让步状语从句都可用倒装结构，但as必须用倒装结构。这种倒装结构通常是把从句中的表语、状语或谓语动词放在句首。作表语的名词前如有不定冠词a(n)，在倒装结构中，前面不能保留冠词。

　　Teacher as/though he is, he is not capable of teaching all subjects.

　　虽然他是个老师，但是他不能教所有的科目。

　　Hard as he tried, he could not make great progress.

　　尽管他努力尝试，但是他没有取得任何大的进步。

　　Lose his money as he did, he didn't feel worried.

　　尽管丢了钱，但他不感到担心。

　　2．even if和even though

　　Do you know what it will mean to them if you tell the truth, even if/though they already know?

　　你知道如果你告诉他们实情，即使他们已经知道，这对他们而言将意味着什么吗？

　　3．while引导让步状语从句时，意为"尽管，虽然"，相当于although。

　　While I admit that there are problems, I don't agree that they cannot be solved.

　　尽管我承认有问题存在， 但我不同意说这些问题不能解决。

　　4．no matter who (what, when, which, how, where等)引导让步状语从句时，相当于"who (what, when, which, how, where等)＋­ever"，表示"无论何人(什么，何时，哪个/些，怎样，何地)"等。如：

　　No matter what/Whatever you say, I won't believe you.

　　无论你说什么，我都不相信。

　　He keeps taking physical training in winter no matter how/however cold it is.

　　冬天不管有多冷，他一直坚持体育锻炼。

　　5．whether ...or (not) ...

　　Whether she comes here or we go there, the topic of discussion will remain unchanged.

　　不管是她来这儿还是我们去那儿，讨论的话题都不会变。

　　集中演练2

　　2－1.句型转换

　　①Whatever work we do, we should do our best.

　　→No matter what work we do, we should do our best.

　　②Though he is a child, he knows a lot.

　　→Child as/though he is, he knows a lot.

　　③No matter how hard he tried, he failed his examination again and again.

　　→However hard he tried, he failed his examination again and again.

　　④Whoever telephones, just say I'm out.

　　→No matter who telephones, just say I'm out.

　　2－2.完成句子

　　⑤所有的国家都应平等，不管它们是否强大。

　　All the nations should be equal, whether they are strong or not.

　　⑥虽然我们在那件事上意见不合，但我们仍然是朋友。

　　While we don't agree on that, we continue to be friends.

　　⑦即使我再次失败，我也决不会放弃这个实验。

　　Even if I fail again, I will not give up the experiment.

　　⑧无论发生什么，他都不会介意的。

　　No matter what/Whatever happened, he would not mind.

　　⑨纵使你反对，我也要去。

　　Object as/though you may, I'll go.