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:if (假设,如果),unless (除非),so/as long as (只要),suppose/supposing (that)(倘若,假设); only if (只有……才),provided/providing (that)(如果),on condition that (条件是),in case (如果,万一),when (如果;既然,考虑到)。If Tom passes the examination,his father is going to buy him a bicycle.如果汤姆考试及格,他父亲将会给他买一辆自行车。You may watch TV as long as you finish your homework.只要你做完作业,你就可以看电视。Suppose/Supposing the plane does not arrive on time,what shall I do?假定飞机不能准时到,我该怎么办?How can they learn anything when they spend all their spare time watching television?既然他们把所有空闲的时间都用来看电视了,还能学到什么东西呢?Only if you take an active part in physical activity will you be able to keep fit...