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,无忧,PPT,整理发布,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,武威市第八中学,初中英语语法,If,引导的真实条件状语从句,主讲:周明艳,单位:甘肃省武威市第八中学,1,If,引导的真实条件句,非真实条件句,3.,时态呼应,1,.,主从句的位置,2.If,的两面性,真实条件句,If,引导的条件状语从句,一,.,定义,二,.,主要要素,if“,如果,假如”它引导的句子表示,“在,条件下,某事才能发生”,真实,条件句用于陈述语气,表示假设的条,件可能存在或发生。,2,(主句),(主句),I will stay at home,if it rains tomorrow,.,1.,主从句的位置,主从,无,逗,从主,有,逗,(从句),=,If it rains tomorrow,I will stay at home.,(从句),3,2.If,的两面性,We will go out,if,it is fine tomorrow.,2),I want to know,if,he is a teacher.,if,在条件状语从句中翻译为,“,如果,”,if,在宾语从句,中翻译为,“,是否,”,如果,whether,4,2.If,的两面性,3.,时态呼应,1),主句为,一般将来时态,,,if,从句用,一般现在时态,(,主将从现,)。,1.We,will stay,at home if it,rains,tomorrow.,2.We,are going to stay,at home,if it,rains,tomorrow.,注意,X,在,if,引导的条件状语从句中,当主句是一般将来,时时,不能够使用,be going to,结构,而要用,will/shall,5,2.If,的两面性,3.,时态呼应,3),主句为,祈使句,,,if,从句用,一般现在时态,(,主祈从现,),1.You,must,stop if the traffic,is,red.,2.Dont wait,for me if I,am,late.,2),主句中含有,情态动词,,,if,从句用,一般现在,时态,(,主情从现,),1.If you,finish,your homework,you,can,go home now.,2.If you,drive,too fast,you,may,have an accident.,6,总结,If,引导的真实条件句用法巧记忆:,从主有逗,,主从无逗;,主将从现,,主祈从现,,主情从现;,是否如果,,要分清楚。,7,2.If,的两面性,3.,时态呼应,三、练习巩固,3.Youmay pass theexamifyou,(study),hard.,will come,comes,will give,1.If the rain _(stop)tonight,we will go to the cinema.,一)给所给词的适当形式填空,解析:,if,意为“是否”,引导条件句主将从现,所以从句为一般现在时,2.I want to know if he _(come)tomorrow,if he _(come),I _(give)the,massage to him.,解析:第一空,,if,意为“是否”,引导宾语从句,时态为一般将来时;第二三空,,if,意为“如果”引导条件句,主将从现,解析:,if,意为“如果”引导条件句,主情从现,stops,study,8,二)选择,4.Please stay at home if it,tomorrow.,A.rains B.rained,C.will rain D.rain,解析:,if,引导条件状语从句,主句放在从句之前,主句是祈使句,从句用,一般现在时,选,A,5,I _ her the answer if she _me.,A.am going to tell,asks B.will tell,asks,C.am going to tell,ask D.will tell,ask,解析:在,if,引导的条件状语从句中,当主句是一般将来时时,,不能够使用,be going to,结构,而要用,will,选,B,三、练习巩固,9,Thank you!,微课程,10,
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