If引导的时间状语.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2005-11-25,#,If,引导的时间状语从从句,Conditional sentences,条件状语从句的含义,We use conditional sentences to talk about possible actions and the results of these action.,The if-clause talks about a possible action.,The main clause talks about the likely results.,We can also put the if-clause after the main clause,.,Things to remember,We can also use modal verbs such as,can,in the main clause.,For example:,If you go to Beijing,you can visit the summer palace.,Something very important,The verb in the if-clause is in the simple present tense.,The verb in the main clause is in the simple future tense.,If,引导的条件状语从句的位置和结构,If,引导的条件状语从句在句中的位置比较灵活，可以放在主句之前（,这时要用逗号和主句隔开,），也可以放在主句之后（,中间不用逗号,）。,If,引导的条件状语从句的结构：,If+,陈述,句，主语,+,谓语,+,其他。或 主语,+,谓语,+,其他,+if+,陈述句。意为“如果,-,就,-,”。,For example,If you ask him,he will tell you the answer.,-He will tell you the answer if you ask him.,If you study hard,you will pass the examination.,-You will pass the examination if you study hard.,*,如果主句中含有,must,may,can,等情态动词，从句要用一般现在时。,If you drive too fast,you may have an accident.,You must stop if the traffic light is right.,If you go to Beijing,you can visit the Great Wall.,单项选择,1,We will have a picnic,it dose not rain tomorrow.,A,though,B unless,C until,D if,2 If the weather,fine,we,have a sports meeting this weeked.,A,will be;will,B,is;will,C was,;would,D,is;would,TRAVEL GUIDE,Shopping,If you go,to,you,.,Eating,If you go to,you,.,Sightseeing,If you go to,you,.,Translation,1,如果你让轮子变圆，他们会转的容易些。,。,2,如果你穿上外套，你就不会觉得那么冷静了。,。,3,这块肉不会变质，如果你把它放在冰箱里。,。,