条件状语从句Adverbial Clauses of Conditions(1) if, unless（除非if not...）eg. ________ we have enough evidence, we can’t win the case.________ I was in charge, I would do things differently.(2) only if 只有，只要eg. We will go only if it clears up./ Only if it clears up, __________________ Only if we work together_____________________只有一起努力，我们才能成功。

区分：only if Vs. if only _______________________________________eg. If only I were a superman. /If only I could fly./If only I had taken his advice yesterday.(3) on condition that 条件是，前提是eg. You can go out on condition that you wear an overcoat.He spoke to the reporters on condition that he was not identified.(4) as long as/so long as 只有，只要eg. You may use the room as long as you clean it up afterwards.We can get there early so long as the children will cooperate.(5) in case 假使，万一eg. In case we fail, we won't lose heart.We won’t lose heart in case of failure.(6) providing/provided (that) ; suppose/supposing(that) 倘若，假使eg. We'll visit Europe next year, provided that we have the money.Suppose/Supposing (that) I don’t have a day off, what shall we do?让步状语从句Adverbial Clauses of Concession2)Two heart attacks in a year. It hasn't stopped him smoking,__________.3)Good ___________ he is, he will never be the top of his class. (adj.)4)Hard ___________ he works, he makes little progress.（adv.）5)Child___________ he is, he knows a lot. (n.是[C]单数时, a/an删去)6)Try ___________ he might, he couldn't find a job. (v.原形)7)_________________ I'm willing to help, I don't have much time available.(5) even if/though 即使eg. She won’t attend such parties even though/if she is invited.We won’t be discouraged even if /though we fail ten times.(6) whether…or 无论……还是eg. __________ the weather is good or bad, they will set off as they planned.__________ he drives or takes the train, he will be here on time.(7) Whatever, whenever…=no matter what/when… 状从eg. Whatever/No matter what you say, I won’t believe you. ________从句Whatever she did was right. ________从句Whoever/No matter who rings, tell him I’m out. ________从句Give it to whomever you like. ________从句Wherever/No matter where he goes, I’ll go. ________从句Sit wherever you like. ________从句注意however, whatever 的形式倒装eg.We shall never succeed, however much we try.However frightened you may be , you must remain calm.Whatever reasons you give, I will not forgive you._________ serious a problem you may have, you should gather your courage to face the challenge._________ a serious problem you may have, you should gather your courage to face the challenge.让步/条件状语从句习题单句改错1.In case of I forget, please remind me of my promise.2.If the police thought he was the most likely one, they couldn’t arrest him since they had noconvincing proof.3.Though not very big, but the restaurant is popular in our area.4.Tired although he was, he insisted on working on the farm.5.No matter whatever happens, we will never lose hope.单句语法填空1.(2018北京)______we don’t stop climate change, many animals and plants in the world will be gone.2.(2018江苏)you can sleep well, you will lose the ability to focus, plan and stay motivated afterone or two nights.3.(2016浙江) online shopping has changed our life, not all of its effects have been positive.4.(2012湖南)_____ hard you try, it is difficult to lose weight without cutting down the amount you eat.5.Try ______ he might, he could not come up with an idea for his mother’s Christmas gift.6.All people, _______ they are old or young, rich or poor, are trying their best to fight against the virus.单项选择1.(2010湖南) Tim is in good shape physically_____ he doesn’t get much exercise.A. ifB. even thoughC. unlessD. as long as2.(2011辽宁) No matter how _____, it is not necessarily lifeless.A. a desert may be dryB. dry may a desert beC. may a desert be dryD. dry a desert may be3.(2011陕西)_____all of them are strong candidates, only one will be chosen for the post.A. SinceB. WhileC. IfD. As4.(2012江苏)One’s life has value _____ one brings value to the life of others.A.as long asB. no matter howC. so thatD. except that5.(2013江苏) In the global economy, a new drug for cancer, _____ it is discovered, will create manyeconomic possibilities around the world.A. whateverB. whoeverC. whereverD. whichever6.(2013天津) _____small, the company has about 1,000 buyers in over 30 countries.A. AsB. AlthoughC. IfD. Once7.______ your taste is, you can be satisfied with this newly-opened restaurant.A.HoweverB. WhereverC. WheneverD. Whatever8.We will carry on with it ______ we can get enough money or not.A.unlessB. whetherC. thoughD. until9. (2014湖南) You will never gain success ______ you are fully devoted to your work.A. whenB. becauseC. afterD. unless。