Unit 2 Section Ⅲ Discover useful structures（课件PPT）-【步步高】2024-2025学年高二英语选择性必修第二册学习笔记（人教版）

该高中英语课件聚焦名词性从句复习，涵盖主语、宾语、同位语及表语从句。通过“语境感悟”恐龙主题短文引导学生感知目标语法，“自我发现”环节自主归纳从句类型，再经“语法精讲”分点解析连接词用法与句式结构，构建从感知到归纳再到深化的学习支架。 其亮点在于语境化与结构化教学结合，短文导入贴近学生兴趣，助力语言能力提升，自主归纳环节培养思维品质中的分析能力，例句联系“理论应用于实践”等实际场景增强学习能力。达标检测巩固知识，教师可高效教学，学生扎实掌握语法并提升语言运用能力。

Section Ⅲ Discover useful structures—Review of noun clauses Bridging cultures Unit 2 阅读以下短文，感知加颜色部分，并完成后面的小题。 There are many mysteries ①what the dinosaurs looked like.You may think ②that dinosaurs were big，green and scaly，right？But the fact is ③that they appeared very different from ④what we think.In recent years，scientists have worked out ⑤what they looked like：many of them were small with feathers.Scientists also believe ⑥that many dinosaurs had bright colors.But ⑦why the dinosaurs came into extinction is still a mystery. 语境感悟 [自我发现] 以上加颜色部分均为 从句；名词性从句即在复合句中起名词作用的从句，包括 从句，如句⑦； 从句，如句①； 从句，如句③； 从句，如②、④、⑤和⑥。 名词性 主语 同位语 表语 宾语 语法精讲 定义：在句中起名词作用的从句，可以作为一个整体看待，其作用就相当于一个名词。 类别：主语从句、宾语从句、同位语从句、表语从句。 连接词：名词性从句通常用一个连接词和主句连接。 连接代词 what，which，who，whom，whose，whatever，whichever，whoever，whomever等，在从句中作主语、宾语、表语、定语 连接副词 when，where，how，why等，在从句中作状语 从属连词 that，whether，if，as if/though等，在从句中不作成分 特点：名词性从句要用陈述语序，即：连接词＋主语＋谓语 At present I know how I can apply theory to practice. 目前我知道如何将理论应用于实践。 What I should do now is grasp the precious chance. 我现在应该做的就是抓住这个宝贵的机会。 一、主语从句(在复合句中作主句的主语) 1.that，whether引导的主语从句 That they should get well prepared for their future is obvious to the students. ＝It is obvious to the students that they should get well prepared for their future. 显而易见，学生们应该为自己的未来做好准备。 Whether he will succeed remains to be seen. ＝It remains to be seen whether he will succeed. 他是否会成功还有待观察。 It is uncertain whether/if he will attend the meeting on time. 他是否会按时参加会议还不确定。 小 结 <<< that引导主语从句时不可省略；主语从句位于主句谓语动作前，表示“是否”，只能用whether。若用it作形式主语，则whether与if可互换。 2.连接代词和连接副词引导的主语从句常保留各自的疑问词义 Why the fire broke out is still unknown. ＝It is still unknown why the fire broke out. 人们仍然不知道这场火灾为何会发生。 How he can learn to appreciate Chinese culture remains an important goal for him. 学会如何欣赏中国文化对他来说仍然是一个重要目标。 Which is the best of all those ways is uncertain. 所有那些方法中哪一个最好还不能肯定。 What she did after that is not clear to us. 那之后她做了什么事我们不清楚。 小 结 <<< 如果主语从句过长，可以用it作形式主语。 3.it作形式主语常有下列句型： It is a pity that she has made such a silly mistake.她犯了这样一个愚蠢的错误，真是遗憾。 It is very important that a student (should) learn English well.学生学好英语很重要。 It is suggested that the meeting (should) be put off. 有人建议会议延期召开。 It seems that he is not quite himself today.他今天好像不怎么舒服。 二、宾语从句(在复合句中作及物动词或介词的宾语) 1.作及物动词或介词的宾语 His tutor explained (that) he should read more books.他的导师解释道他应该多读书。 I will do what/whatever I can (do) to help him.我会尽我所能去帮助他。 I wonder whether/if they will come to our party.我想知道他们是否会来参加我们的聚会。 She asked me whose handwriting was the best in the class.她问我谁的书法是班上最好的。 A modern city has been set up in what was once a wasteland.一座现代城市已经在曾是荒地的地方建起来了。 It depends on how we solve the problem.这取决于我们如何解决这个问题。 2.it作形式宾语 I have made it clear that I will not accept this job.我已经表明我不会接受这份工作。 I hate it when people ask me for money.我不喜欢别人向我要钱。 I would appreciate it if you could consider my application.如果您能考虑我的申请，我将不胜感激。 3.观察下列例句，总结宾语从句的特殊用法 (1)He told me (that) he had two sons and that they had both gone to college. 他告诉我他有两个儿子，他们都去上大学了。 (2)I’m thinking of whether we should go to see the film.我正在考虑我们是否应该去看电影。 I can’t say whether or not they can come tomorrow.我不敢说他们明天是否能来。 She didn’t know whether to go or to stay.她不知道是走还是留下。 总 结 <<< (1)当and 连接两个或者两个以上that引导的宾语从句时，只有第一个宾语从句可省略that，后面的宾语从句中的that不能省略。 (2)作介词宾语、与or not或不定式连用时，只用whether不用if。 三、同位语从句 在复合句中用作同位语的从句称为同位语从句。它一般放在fact，news，idea，truth，hope，problem，information，belief，thought，doubt，promise，question等抽象名词的后面，对前面的名词作进一步的解释，或说明前面名词的具体含义。同位语从句通常由that引导，也可由whether引导，或由连接代词(what，which，who，whose等)和连接副词(when，where，why，how等)引导。 The news that they had won the game soon spread over the whole school. 他们比赛获胜的消息很快传遍了整个学校。 He hasn’t made the decision whether he will go there.他还没有作出决定是否去那里。 I have no idea where he lives.我不知道他住在哪里。 The question who should do the job requires consideration.谁应该做这项工作的问题需要考虑。 同位语从句和定语从句的区别： (1)从意义上看，同位语从句是对一个名词的具体内容加以解释说明；定语从句是对名词进行修饰限定。 (2)从结构上看，that引导同位语从句时，不作成分；that引导定语从句时作成分。 比较：He told me the news that our team won.(同位语从句) He told me the news that was exciting.(定语从句) 四、表语从句(在复合句中作表语，位于系动词之后)(具体用法讲解见Unit 1) The trouble is that I have lost his address.麻烦是我把他的地址弄丢了。 I was very angry.That was because he didn’t come.我很生气，那是因为他没来。(强调原因) He didn’t come.That was why I was very angry.他没来，那就是为什么我很生气。(强调结果) The reason why I was very angry was that he didn’t come.我很生气的原因是他没来。 The question is whether he can make it.问题是他能否成功。 __________ ____________ __________ Ⅰ.用合适的引导词填空并判断加颜色部分是何种名词性从句 1.You can watch some movies and study people speak. 2.There is no doubt keeping an English diary helps you a lot with your written English. 3. I have achieved in English learning makes my mother quite delighted. 达标检测 how 宾语从句 that 同位语从句 What 主语从句 4.The question is will be the successful applicant for the summer job. 5.It remains to be seen my research paper will be well received. __________ __________ 表语从句 主语从句 who whether/if Ⅱ.完成句子 1.我被他所做的事深深地感动了，泪水止不住地流下来。 I was deeply moved by ，tears rolling down without control. 2.最重要的是我们从来没有丧失继续努力的热情。 ___________________________ is to keep on trying. what he had done What is the most important that we never lose the enthusiasm 3.我们坚信游客能够通过这次活动更多地了解中国传统文化。 We hold the strong belief _________________________________________ _________________________________. 4.我是否会参加这次英语演讲比赛还要看情况。 It remains to be seen _____________________________________________ ________. 5.精通英语口语使我能够自由地与外国人交流。 _______________________________________________ enables me to communicate with foreigners freely. that visitors can learn more about traditional Chinese culture through the activity whether/if I will participate in the English speech contest That I have a good command of oral English 6.他之所以申请这份工作是因为他想积累工作经验。 The reason why he applied for the job was __________________________ __________________. that he wanted to accumulate working experience 本课结束 $