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1、Conditionals条件句条件句1.If the weather is good,we will go out tomorrow.2.If I were you,I would study hard.3.If you heat the ice,it turns to water.First conditional:真实从句真实从句,条件有可能实现的条件有可能实现的 Second conditional:非真实从句非真实从句,不可能实现的不可能实现的,与现在事实相反与现在事实相反 Zero conditional:零条件从句零条件从句,客观事实客观事实,有先后次序有先后次序 123IfIf从
2、句从句:一般现在时，主句：将来时一般现在时，主句：将来时条件从句为：条件从句为：If+If+主语主语+动词过去式；动词过去式；主句为：主语主句为：主语+would/should+would/should+动词原形动词原形IfIf从句从句:一般现在时，主句：一般现在时一般现在时，主句：一般现在时Review:IfReview:If引导的条件状语从句引导的条件状语从句:1.First conditional:真实从句真实从句,条件有可能实现条件有可能实现2.Second conditional:非真实从句非真实从句,不可能实现的不可能实现的,与现在事实相反与现在事实相反 3.Zero condit
3、ional:零条件从句零条件从句,客观事实客观事实,4.Third conditional:虚拟语气条件从句虚拟语气条件从句,与过去事实相反与过去事实相反If sb.+_,sb._ _+third form of the verb.had donewouldhave done1.if we chew our food until it is soft in our mouths and then swallow it,it will help our bodies digest it better.2.if it has green plants materials added to it,h
4、elps to stop tooth decay.3.if people were to chew sugar-free gum after a meal,it would help prevent tooth trouble.4.if you had chewed sugar-free gum regularly for the last year,it is possible that you would have lost up to 5 kilos by now.02135.if people chewed 100 times per minute for 12 minute for
5、12 minutes,70 kilocalories were burned.6.if I had used this chewing gum when I was giving up smoking ten years ago,I would have been more successful at quitting quickly and much healthier today.7.if we chew gum,it will cause our bodies to believe we are digesting food and our stomachs will produce d
6、igestive juices unnecessarily.?318.if this is the case,the stomach may become tense.9.if dentists encouraged its use,the message would be sent out and children might chew gum instead of brushing their teeth.10.Unless we are careful,the number of young people with bad teeth will rise and this will be
7、come a serious problem.?21Mixed Conditionals混合型条件句混合型条件句1.If he had broken the record,he would be famous now.2.If they hadnt invited me to the party,I wouldnt be here.Form(形式形式):*表示与过去事实相反的某一条件表示与过去事实相反的某一条件 给现在带来的结果或影响给现在带来的结果或影响32If sb.had done,sb.would do1.If he was/were a more skillful player,he
8、 would have scored more points.2.If she didnt speak a few languages,she wouldnt have got that job.Form(形式形式):If sb.did,sb.would have done23*表示与现在事实相反的某一条件表示与现在事实相反的某一条件 给过去所带来的影响给过去所带来的影响2+3If sb.did,sb.would have done*表示与现在事实相反的某一条件表示与现在事实相反的某一条件 给过去所带来的影响给过去所带来的影响Mixed Conditionals3+2If sb.had don
9、e,sb.would do*表示与过去事实相反的某一条件表示与过去事实相反的某一条件 给现在带来的结果或影响给现在带来的结果或影响Page80 The key of Ex.12.he wouldnt have become a model.3.he wouldnt have got a part in a soap opera.4.his photo wouldnt have appeared on the cover of a popular magazine.5.he wouldnt have married a pop star.Page80 The key of Ex.17.she w
10、ouldnt be a professor there now.8.she wouldnt be a world expert in biochemistry.9.various companies and organizations wouldnt ask her advice.10.she wouldnt be invited to scientific conferences all over the world.Page80 The key of Ex.42.If Jamie hadnt been so good at maths,he wouldnt pass the test wi
11、thout revising at all.3.If I had got your message,I would know about your party.4.If our parents hadnt been very good friends,we wouldnt be good friends either.Page80 The key of Ex.15.If Paul hadnt failed his exam,he wouldnt have to take it again.6.If Lucy hadnt been very proud,she wouldnt reject their help.7.If I had been fit,I would go mountain climbing.