Grammar条件状语从句和让步状语从句-精选（公开课件）.pptVIP

Adverbial clause of condition;条件状语从句常由 if, unless, in case, on condition that, as long as, provided (that) /providing (that), suppose (that)/supposing (that) 等连词引导。;____you don’t obey the rules, you’ll be punished. He will do the work ____________________ you pay him. ______________ she doesn’t come, what shall we do? I can tell you the truth _________you promise to keep a secret. ________ I forget, please remind me about it. _________we don’t lose heart, we’ll find a way to overcome the difficulty. You will fail to arrive there in time ________ you start earlier. ;unless conj.除非,若不 (= if … not) Don’t come unless I telephone. You will fail unless you work hard.;As/So long as we don’t lose heart, we’ll find a way to overcome the difficulty. As long as you’re happy, it doesn’t matter what you do. In case I forget, please remind me about it. ;on condition (that) ... 在……条件下, 如果 I can tell you the truth on condition that you promise to keep a secret. You can go swimming on condition (that) you dont go too far from the river bank. ;provided/providing conj.假如, 以…为条件 He won’t be against us in the meeting provided that we ask for his advice in advance. You can borrow the car, providing I can have it back by six oclock. She will go provided her friends can go also. He will do the work providing you pay him.;but for/without 要不是，如果没有 ;有些条件句可省略某些成分或改成短语： If necessary, ring me at home. He will come if asked. In case of fire, ring the bell. He would never do this unless forced. If in doubt, contact our local office.;Adverbial clause of Concession;引导让步状语从句的主要连词有： although, though,even though, even if, while, as, no matter +疑问词，疑问词+ever;注意：;2.though引导的让步状语从句，从句可 倒装也可不到装。 Young though he is, he knows a lot. Though he is young, he knows a lot. ;4.no matter+特殊疑问词引导让步状语从句时，可和特殊疑问词+ever替换，但特殊疑问词+ever还可引导名词性从句。 I don’t believe whatever he says. no matter how however no matter what/ which whichever/ whatever;Whoever you are, you can’t pass this way. So don’t lose heart, wha