宾语从句whether和if的用法省公共课一等奖全国赛课获奖课件.pptx

宾语从句中引导词宾语从句中引导词宾语从句中引导词宾语从句中引导词whetherwhetherwhetherwhether和和和和if if if if使用方法使用方法使用方法使用方法第1页 宾语从句定义置于动词、介词等词性后面起置于动词、介词等词性后面起宾语作用宾语作用从句从句叫宾语从句。叫宾语从句。第2页引导词引导词whether与与if当宾语从句是普通疑问句时，由连词当宾语从句是普通疑问句时，由连词whetherwhether或或ifif引导，引导词引导，引导词whether/if whether/if 意义为意义为“是否是否”，在从句中不作成份，不能省略。，在从句中不作成份，不能省略。e.g.Lily wanted to know if/whether her grandma liked the handbag.第3页44介词后宾语从句用whetherWe are talking about whether we can get the chance.01whether引导宾语从句能够与or not连用He doesnt know whether she will come or not.02whether与if区分第4页503不定式前用whetherI just wonder whether to stay for another hour.04whether引导宾语从句能够放句首Whether they will join in the picnic I dont care.第5页61.I wonder _ well finish the task on time.2.I want to know _ its good news or not.3.We are talking about _ we admit students into our club.Exerciseswhether/ifwhetherwhether第6页71.介词后宾语从句用whether2.whether引导宾语从句能够与or not连用3.whether引导宾语从句能够放句首4.不定式前用whetherSummary第7页8HomeworkDo the exercises in Workbook Period 3第8页Thank you for Thank you for listening!listening!ByeBye第9页