UNIT 1 Using language——运用•提升语言能力（课件PPT）-【新课程学案】新教材2022-2023学年高中英语选择性必修第三册（外研版2019）

Using language—运用·提升语言能力 课时目标 1.在语境中理解主语从句的结构和表意功能，掌握主语从句的用法，并能够在真实语境中进行运用。 2.能够恰当地使用相关词汇描述人物外表和个人品质。 3.能够运用所学表达进行演讲。 4.正确认识外表的重要性，树立积极的人生态度。 语法项目——主语从句 初识语法——在美文运用中体悟 　　 ①Which explanation we long to find is still many mysteries about the extinction of dinosaurs. ②It is probably believed that dinosaurs were big, green and scaly, right? In fact, ③it seems that they appeared very different from what we think. In recent years, ④how they look has been arising scientists' interest: many of them were small with feathers. However, ⑤whether they had feathers still isn't clear — it might have been for communicating or for staying warm, but not just for flight. ⑥What scientists also believe is that many dinosaurs had bright colours. ⑦Whatever colours they have depend on their habitats. That is, dinosaurs which could fly would have different colours to those living in the sea. ①which引导主语从句，并在从句中作定语； ②it作形式主语，that引导主语从句并作真正主语； ③it作形式主语，that引导主语从句并作真正主语； ④how引导主语从句，并在从句中作状语； ⑤whether引导主语从句，在从句中不作成分； ⑥what引导主语从句，并在从句中作宾语； ⑦whatever引导主语从句，并在从句中作定语。 续表 慧学语法——在归纳演绎中学通 [自主感知] ①That we are invited to the concert this evening is good news to us. ②(2022·浙江1月高考)Whatever grade the team received would be shared by both students. ③(2022·全国乙卷)It is calculated that European railways alone spend approximately 20 billion euros a year on maintenance. ④The earth became so violent that it was not clear whether the shape would last or not. ⑤When we will have a picnic has been decided. [会发现] (1)以上蓝体部分在句中作 。 (2)②句中的whatever在从句中作 。 (3)③句中It是 ，真正的主语是 。 (4)④句中的whether意为： 。 [语法规则] 在句子中起名词作用的各种从句统称为名词性从句。根据它们在句中的不同的语法作用，名词性从句分为主语从句、宾语从句、表语从句和同位语从句。复合句中用作主语的从句称为主语从句。 主语 定语 形式主语 that引导的主语从句 是否 一、主语从句的连接词及其句法功能　 1．连接词that和whether/if (1)that引导主语从句时，在从句中不充当任何句子成分，也没有词汇意义，只起连接作用，但不可省略。有时为避免头重脚轻，使句子平衡，需用it作形式主语，将that引导的主语从句后置，that不可省略。 That she survived the accident is a miracle. ＝It is a miracle that she survived the