Section Ⅲ 　Grammar--条件状语从句和让步状语从句

语 境 自 主 领 悟 先观察原句 ①If you say the word "communication"， most people think of words and sentences.

②In case there is a fire，what will you do first？

③You won't arrive there on time unless you take a plane.

④Even if you were busy，you should take care of your family.

⑤Clever as he is，he doesn't make great efforts in his lesson.

⑥However much I tried，I couldn't work the question out.

⑦He keeps taking physical training in winter no matter how cold it is.

⑧Although/Though she works very hard，yet (still) she makes very slow progress. 后自主感悟 1.①②③句中，黑体部分引导条件状语从句；④⑤⑥⑦⑧句中，黑体部分引导让步状语从句。

2.由③句可知，在条件状语从句中，主句用将来时，从句用一般现在时代替一般将来时。

3.⑧句中 although/though 引导让步状语从句不与 but 连用，但可以与 yet 或 still 连用。

4.由⑤句可知，as 引导让步状语从句且置于句首时，从句用倒装语序。

5.⑥⑦句中，however 和 no matter how 都引导让步状语从句，两者可以换用。 　　

　　一、条件状语从句

　　1．条件状语从句的引导词

引导条件状语从句的词/短语有：