冀教版(三起)英语八年级下册 宾语从句(课件)
展开宾语从句语法讲解一.学习任务: 宾语从句二.学习重点 1.宾语从句的概念 2.宾语从句的引导词 3.宾语从句的语序 4.宾语从句的时态变化三.学习难点 1.if 与whether 的区别 学习目标:宾语从句概念1.宾语:宾语可由名词,代词或名词短语或句子来充当。I know him . 2.宾语从句:在句子中起宾语作用的从句叫做宾语从句I know who she is. 宾语从句三个要点引导词时态语序引导词(1)引导从句为陈述句的宾语从句时,引导词用that,that在句中无词义,不能充当句子成分,一般情况下可以省略。I believe (that)my dream will come true. I’m sure(that) she regrets hurting you.e.g, She told me (that) she would like to go with us. (2)以 whether 或 if 引导的宾语从句, 主要用来引导一般疑问句意思或选择疑问句意思的宾语从句。I don’t know if he will arrive in time.I want to know whether she bought a book. e.g, I wonder if /whether you told the news to Li Lei(3)特殊疑问句转化成宾语从句时,引导词用特殊疑问词(由疑问代词what,which,who,whom,whose疑问副词where,when,how,why等);引导词后要用陈述句语序。 You will understand why I did it one day.Could you tell me where the bookstore is? Could you please tell me how you read the new word?E.g. He didn’t tell me when we should meet again.时态1. 主句用一般现在时,从句可根据句意用各种时态。We don’t know who took away the book?I think that mooncakes are delicious.I suppose that he will come tomorrow.2. 主句用过去时,从句用过去某个时态(一般过去时, 过去将来时,过去完成时,过去进行时)。I knew that he passed the exam.I knew that he would go to the park tomorrow.I knew that he had been married.I knew that he was crying that time.3. 主句用过去时,从句是真理时,只用一般现在时。My father told me that the sun rises in the east.语序不论由哪种引导词引导的宾语从句,其引导词都位于从句句首,且从句用陈述语序,即“连接词+主语+谓语+其他”例如: I think (that) you will like this school soon. Can you tell me how I can get to zoo? Please tell me when we’ll have the meeting. If 与whether 的区别1. 一般情况下,whether 和if 可以互用, 但有些情况例外: a. I don’t know whether he will come or not. b. 介词后只能用whetherI don’t care of whether he is handsome. c.与to do 不定式连用只能用whetherHe wondered whether to stay here the next week. d.作主语只能用whetherWhetherhe will come is not decided. e. if作“如果”含义时, 引导的是条件状语从句, 这时 不能用whether 与or not 连用只能用whether其它注意点 否定转移:主句的谓语动词是think,believe,imagine,suppose,expect,guess等表示主观意见和猜想的动词在句中作谓语时,按习惯其宾语从句的否定通常转移到主句。I don’t think he will come to my party.I think he won’t come to my party.×宾语从句三个要点引导词时态语序宾语从句三注意,时态语序引导词; 主句一般现在时,从句不需受限制;主句一般过去时,从句须用相应时;陈述句转化that引,一般疑问句用if/whether, 特殊问句疑问词,引导词后陈述式。口诀考题分析1. I don't know _________ he will come tomorrow. _________ he comes, I'll tell you. A. if; Whether B. whether; Whether C. if; That D. if; If2. I don't know _________ the day after tomorrow. A. when does he come B. how will he come C. if he comes D. whether he'll come 3. The teacher asked the students __________.A. if they were interested in dinosaurs B. when was Albert Einstein bornC. what they will do with the computers D. how many trees they have planted DDAThanks
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