江苏南京市英语条件状语从句 .pdf

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1、条件状语从句条件状语从句 Grammar A-using if.(if 引导的引导的条件状语从句条件状语从句)1、if 意为“如果；假如”，表示在某种条件下某事很可能发生。if 引导的条件状语从句可以位于主句之前或之后。如果从句在前，从句和主句间要用逗号隔开。If you ask him,he will help you.如果你请他帮忙，他会帮你的。If it does not rain tomorrow,we will go hiking.如果明天不下雨，我们就去远足。If hunters catch a giant panda,they will kill it for its fur.=

2、They will kill it for its fur if hunters catch a giant panda.If people find baby pandas alone,they will take them away.=They will take them away if people find baby pandas alone.2、If 引导的条件状语从句中，主句中的动词常用一般将来时，也可含有情态动词或是祈使句。从句均用一般现在时。主将从现原则 Ill pay you double if you get the work finished by Friday.如果你

3、周五前完工，我付你双倍的报酬。Dont miss the programme if you like music.如果你喜欢音乐，不要错过这个节目。If it is fine tomorrow,we can go and fly the kite.如果明天天气好，我们可以去放风筝。Grammar B-using unless.(unless 引导的引导的条件状语从句条件状语从句)1、unless 意为“除非，如果不，若不，除非在的时候”，相当于 if not（Unless=If not）。在 unless 引导的条件状语从句中,主句中的动词常用一般将来时，也可含有情态动词或是祈使句。从句通常用

4、一般现在时。主将从现原则 Unless it rains,the game will be played.除非下雨，否则比赛将照常进行。=If it does not rain,the game will be played.如果天不下雨，比赛将照常进行。=If it rains,the game will not be played.如果天下雨，比赛将不能照常进行。Dont touch the machine unless the teacher allows you to.没有老师的允许，不要乱动机器。Unless you try your best,you wont realize yo

5、ur dream.除非你尽力了，否则你将不会实现梦想。You will be late unless you leave right now.你马上离开就不会迟到。You will fail to arrive there in time unless you start earlier.=If you dont start earlier,you will fail to arrive there in time.如果你不早点动身,你就不能及时赶到那儿。If you are not too tired,lets go out for a walk.=Lets go out for a wal

6、k unless you are too tired.2、unless 引导的条件状语从句可放在句首或句尾，放在句首时常用逗号与主句隔开。如：Unless you work hard,you will fail.=You will fail unless you work hard.条条件状语从句小结：件状语从句小结：1、引导词：常用 if/unless，译作“假如，如果；除非”，表示“在某种条件下,会”。2、位置：可放在句首或句尾，放在句首时常用逗号与主句隔开。3、时态：在含有条件状语从句的复合句中，如果主句是一般将来时，从句要用一般现在时主将从现原则)，即遵循“主将从现”原则。学科网（北京

7、）股份有限公司 条件状语从句条件状语从句 巩固练习：巩固练习：一、单项选择一、单项选择 1There _ a volleyball game next Saturday.If it _ well have to put it off.Ais going to be;rains Bis going to be;will rain Cis going to have;will rain Dis going to have;rains 2Mary is good at writing.I am sure shell get a good place _ she takes part in the w

8、riting competition.Abefore Bif Cthough Dunless 3 Can we win the basketball game tomorrow?Of course,_ we try our best.Aif Bor Cunless Dthough 4You wont pass the exam _ you work harder than before.Aif Bafter Cwhen Dunless 5Happiness is about having each tiny wish come true._ we work hard,well make our

9、 life full of happiness.AIf BUnless CThough 6Daddy,can I go out to play soccer with my friends now?Well,you cant go _ you finish your homework first.Aif Bsince Cunless 7I dont know if it _ tomorrow,but if it _,Ill stay at home.Awill rain;rains Bwill rain;will rain Crains;will rain Drains;rains 8Lear

10、ning to write is learning to think._,you wont know things clearly.Aif you write them down Bunless you write them down Cif you wont write them down 9I wont go to the movies this afternoon _ Im free.Aor Bunless Cbecause Dthan 10You will not get the special gift _ you finish all the tasks.Aafter Bbecau

11、se Cwhile Dunless 11It is impossible to finish the difficult task in such a short time on my own _ both of us work together.No problem.Lets start!Aif Bbut Cbecause Dunless 12_ you can use your dictionary,you will learn English better.AIf BUnless CThough DBefore 13You wont fully experience the cultur

12、e of a foreign country _ you go there in person.Abecause Bunless Cas soon as Das long as 14The local government advises people _ to other places _ it is not necessary during the pandemic.Atravel;unless Bto not travel;if Cnot to travel;unless Dnot to travel;if 15The COVID-19 is still spreading rapidl

13、y.Well be at the risk of catching the virus _ we get a vaccine（疫苗）.Aif Bunless Cwhen Dwhether 学科网（北京）股份有限公司 条件状语从句条件状语从句 16The museum will soon be open to the public _ the checking work is done.Abut Bif Cwhile Dunless 17We have a meeting every Monday morning _ there is nothing to discuss.Aas Bunless

14、 Csince Dwhen 18Daniel will succeed in working out the Maths problem _ he gives up.Auntil Bunless Cbecause Dthough 19I think the environment is terrible these years.Yes,it will be even worse _ the government takes action to protect it.Athough Bwhen Cif Dunless 20The weather report says that it _ tom

15、orrow in most parts of Harbin city.If it _,the school sports meet will be put off.Awill rain;will rain Bwill rain;rains Crains;will rain Drains;rains 21No country is safe _ all countries are safe.Asince Balthough Cwhile Dunless 22My brother is going to look for another job _ the boss offers him more

16、 money.Aafter Bwhen Cunless Dif 23We will go out for a picnic _ it rains tomorrow.You neednt worry about the weather.Its sunny tomorrow.Auntil Bif Cunless Dwhen 24Claudia,are you going to Jeffs birthday party on Saturday?Unless I _.Ainvited Bwill be invited Cwas inviting Dam invited 25Dont worry abo

17、ut the final exam.You _ it if you work hard.Thanks!Apass Bwill pass Cpassed Dhave passed 26 Lets go cycling if it _ fine this Sunday.Sounds great.But nobody knows if it _.Ais;rains Bis;will rain Cwill be;rains Dwill be;will rain 27There is no doubt that you _ your dream come true if you keep on tryi

18、ng.Amake Bwill make Care making Dhave made 28If you dont go to the mountains tomorrow,_.Aso will I Bneither will I Cneither do I 29I wonder if he _ time tomorrow.If he _ free,Ill invite him to give us a speech in our school.Awill have;is Bhas;will be Cwill have;will be Dhas;is 30Will you go to Damin

19、gs birthday party?学科网（北京）股份有限公司 条件状语从句条件状语从句 I _ if I _.Ago;will be invited Bgo;am invited Cwill go;am invited Dwill go;will be invited 二、用所给单词的正确形式填空二、用所给单词的正确形式填空 31As long as you keep on practicing and never give up,you _(succeed),I think.32They say the place may be polluted if some factories _(b

20、uild)in the future.33If it rains tomorrow,I _(stay)at home.34My boss wont allow me to have two days off unless my work _(complete)tomorrow.35Ill go to work by car if it _(rain)tomorrow.36Dad says we will go camping this weekend if it _（not be）rainy.37I think our country has done well in fighting with COVID-19.I agree.The spread of COVID-19 can be prevented if right steps _(take).38There is no need to store more than enough rice if the government _(control)the price.39Will Mary go to the fashion show on Sunday afternoon?Of course she will if she_(choose)to be the host.学科网（北京）股份有限公司