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1、宾语从句中引导词whether和if的用法,宾语从句的定义,置于动词、介词等词性后面起宾语作用的从句叫宾语从句。,引导词whether与if,当宾语从句是一般疑问句时，由连词whether或if引导，引导词whether/if 的意义为“是否”，在从句中不作成分，不能省略。e.g. Lily wanted to know if/ whether her grandma liked the handbag.,4,whether与if的区别,whether引导的宾语从句可以放句首Whether they will join in the picnic I dont care.,1. I wonde
2、r _ 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.,Exercises,whether/if,whether,whether,1.介词后的宾语从句用whether2.whether引导的宾语从句可以与or not连用3.whether引导的宾语从句可以放句首4.不定式前用whether,Summary,Homework,Do the exercises in Workbook Period 3,Thank you for listening!,Bye,
