Module 9 Unit 3 导学案 2022-2023学年外研版英语八年级下册

Unit 3　Language in use ◎语法探究 教材链接 1．Could you explain what happened then? 2．Can you tell me how she's different? 3．Could I ask if you've mentioned this to her? 4．Do you know why she treats you like that? 5．I did not know who she was. 6．I asked her why she smiled at me that day. 语法详解 whether/if及疑问词引导的宾语从句 本模块，我们重点学习两类宾语从句—— whether/if引导的宾语从句和疑问词引导的宾语从句。 1．whether/if引导的宾语从句 当表达不确定的概念时要用whether/if引导宾语从句。whether/if意为“是否”，在从句中不充当任何句子成分，不能省略，一般情况下可以互换。if常用于口语，whether 则多用于书面语。如： Do you know whether/if she is a teacher? 拓展：只用 whether 不用 if 的四种情况 情况 例句 与or not 连用时 I don't know whether or not he will come on time. 从句用作介词宾语时 It depends on whether it's going to rain tomorrow. 在带to的动词不定式前 He doesn't know whether to go to the cinema or to read books at home. 当宾语从句移至句首表示强调时 Whether this is true or not, I'm not sure. 注意：if 的两种用法 用法 例句 表示“如果”时引导条件状语从句，时态遵循“主将从现”原则 If it is fine tomorrow，I will play football with my friends.如果明天天气好，我将和我的朋友们踢足球。 表示“是否”时引导宾语从句，时态遵循宾语从句时态原则 I asked if he joined the army.我问他是否参军了。 2.疑问词引导的宾语从句 疑问词在句中既起连接作用，也在宾语从句中充当句子成分，有实际意义，不能省略。 疑问代词：who，whom，whose，what，which 疑问副词：when，where，why，how 疑问代词在从句中作主语、宾语、表语、定语等；疑问副词在从句中作状语。如： ◇Miss Wu asked whose book it was. ◇No one knows why he was late. ◇Do you know when the plane will take off? 注意：宾语从句要用陈述语序。 ◎课时训练 一、单项填空。 (B)1.(2022•成都)—I wonder ______ life will be different in the future. —Maybe we will be able to live on another planet with the development of space technology. A. when B． how C． what (C)2.(2022•武威) I wonder ______． A. that April is the hottest month in Thailand B. do you know where I can buy some medicine C． whether June is a good time to visit Gansu D. how can I improve my pronunciation (B)3.—Do you know ______ your father is looking for? —Yes, his glasses. A．where B．what C．why D．whether (C)4.Mary wants to know ______． A．where am I going to spend the holiday B．that I can carry some boxes for her C．if I have seen her keys D．what will I do when I leave school (B)5.We don'