Unit 10 Section A Grammar Focus-3c课件 人教版八年级英语上册.pptx

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1、Unit 10 If you go to the party, youll have a great time!,Section A Grammar focus3c,Lesson Two,Look at the pictures and make sentences with “if”.,If you go to the party with Karen and Anna, youll have a good time.,If you wear jeans to the party, the teachers wont let you in.,Revision,If you take the

2、bus to the party, youll be late for school.,If you dont go to the party, you will be sorry.,Revision,Look at the pictures and make sentences with “if”.,Grammar Focus,Presentation,Presentation,1.定义：if引导的条件状语从句表示假如从句的动作发生，主句的动作就（不）会发生。2.原则：在含有if引导的条件状语从句的复合句中，主句和从句在时态上通常遵循以下原则：（1）主句用一般将来时，if从句用一般现在时表示将来。If Sam doesnt work hard, he will fail his exams. （从句）一般现在时 （主句）一般将来时（2）主句是祈使句或含有情态动词的句子，if从句用一般现在时。 If you want to lose weight, stop eating so much meat.,