Unit 5 Working the Land Period 4: Grammar 课件-2022-2023学年高中英语人教版（2019）选择性必修第一册

名词性从句 Unit 5 Working the Land Period 4: Grammar 课前候背 1. alternative n.可供选择的事物 2. shortage n.不足;缺少;短缺 3. be comprised of包括;包含;由...组成(或构成) 4. vision n.想象；视力；视野 5. conventional adj.传统的:习惯的 6. intense adj. 热切的;十分强烈的;激烈的 7. domestic adj.本国的;国内的;家用的;家庭的 8.convince vt. 使相信;使确信;说服 9. assumption n.假定；设定 10. reality n.现实;实际情况;事实 11. expand n.vt 扩大；增加 12. widespread adj.分布广的;普遍的;广泛的 13. in turn相应地;转而;依次;轮流 14. essential adj.完全必要的;极其重要的 15. devote ... to把....用于;:献身;致力;专心 1.However, what concerned him most was that farmers often had poor harvests and sometimes even had a serious shortage of food to eat. 2.How this could be done was a challenging question at the time. 3.However, whether it was possible to develop a hybrid of self­pollinating plants such as rice was a matter of great debate.是否有可能开发水稻等自花授粉植物的杂交种是一个争论很大的问题。 4.Today, it is estimated that about 60 percent of domestic rice consumption in China is comprised of crops generated from Yuan's hybrid strains ... 5.I think (that) you should study hard. 6.He asked me where I had put his book. 1．黑体部分作主语的为句__________；作宾语的为句 。 2．句1中的what在从句中作_______;句2中的how在从句中作______。 句5中的that在从句中_________;句6中的where在从句中作________。 3．句3中的whether意为_________。 4．句4中的It是___________，真正的主语是_________________。 1;2;3;4 5;6 主语 状语 不作成分 状语 是否 形主 that about··· (一)主语从句 指在句中作主语的从句，位置与陈述句的主语相同 Whether the sports meet will be held is not certain now. 运动会是否将举行现在不能确定。 How the book will sell depends on its author. 这本书销售如何取决于作者本人。 Where we shall have the meeting makes no difference. 我们在哪儿开会都无所谓。 主从考点1：主从句的谓语动词是单数 【典例2】0.2min 1.What surprised me most ______ (be) that the man in rags was a millionaire. 2.When and where the football match will be held ___________________ (decide) already. 3.That the coal workers are still alive _______ (be) a wonder. was has been decided is 主从考点2：it作形式主语的4种常用句型 1.It ＋不及物动词的适当形式＋从句 It seemed/happened/turned out that 好像/碰巧/结果 E.g. It seemed that he had been to Beijing before. 2.It＋be＋及物动词的过去分词