Unit 5 课时3 Understanding ideas （Grammar)（教学课件）英语新教材外研版九年级上册

Understanding ideas (Grammar) Unit 5 A fine balance 掌握核心词汇：pollution，overfishing，global warming，green energy，organisations； 01 掌握句型：限制性定语从句 that / which（修饰事物/动物）；who（修饰人）；能够合并简单句。 02 区分先行词是人/物，语境中灵活选用关系代词；写作输出正确使用定语从句。 03 学习目标 Lead in 01 02 Presentation 03 Consolidation Exerciae 05 Production 06 07 Homework Contents Lead in 01 Lead in What problems are our oceans facing? How can we describe these things in one sentence? Presentation 02 Presentation (a) Streets, beaches and parks that are usually full of people remain empty. (b) The natural wonders which have been hidden by pollution for years appear again. Read the sentences from the reading passage and summarise the grammar rules. Now find more sentences with these structures in the reading passage. 1. Air pollution is a problem. Air pollution affects everyone. 2. Some organisations harm the environment. These organisations should be punished. Connect the sentences with that or which. Air pollution is a problem that/which affects everyone. Some organisations that/which harm the environment should be punished. Presentation Look at the title, guess what problems will be mentioned in the text? Presentation The oceans are in trouble. Sea animals can't live with higher temperatures are suffering from global warming. Pollution from land is also hurting the oceans. About 80% of ocean pollution comes from land! And overfishing is making many animals live in the sea disappear. For people are worried about the oceans, there are a lot of things we can do.First, we should use green energy. Second, we should stop throwing rubbish into the oceans. Finally, we should stop overfishing. There is no time to waste. We must act NOW, or we will only see sea animals in museums. Complete the webpage using that, which or who. who that that that Presentation Consolidation 03 Consolidation that 和 which 引导的定语从句 1. 什么是定语从句。 在复合句中，用来修饰前面某个名词或代词、进一步说明“是哪一个” “ 什么样的”的从句，叫作定语从句。 例：The path that leads to the wetland is very quiet. 通向湿地的那条小路很安静。 that 和 which 引导的定语从句 2. 什么是先行词 被定语从句修饰的名词或代词叫作先行词。做题时第一步不是急着选关系词，而是先找先行词。 例句 The machine that saves electricity is useful. 3.定语从句的基本作用 定语从句相当于一个较长的形容词，用来进一步说明前面的名词或代词。 Consolidation 4. 基本结构 先行词(物) + that/which + 定语从句 例子 The habit that keeps us healthy is worth developing. 有助于我们保持健康的习惯值得养成。 Consolidation that 指物时的基本用法 that 在从句中作主语 that指代表示事物的先行词，并且在定语从句中充当主语时，that不能省略。 例：The light that uses less electricity is popular. that 在从句中作宾语 如果that在定语从句中作宾语，通常可以省略。 例：The plan (that) our group made worked well. Consolidation that指人的基础延伸 虽然本单元核心训练集中在that/which指物，但考试中会把指人的关系词放在选项中辨析。that 也可以指人。 例：The student that helped me is in Class Three. Consolidation which在从句中作主语 which指代事物，在定语从句中作主语时不能省略。 例：he river which flows through the valley is very clean. which 指物时的基本用法 which 在从句中作宾语 which在限制性定语从句中作宾语时可以省略。 例：The suggestion (which) we accepted saved a lot of time. which 与that的普通替换 在很多限制性定语从句中，如果先行词表示物，that 和 which 都可 以使用。 Consolidation Production 04 Production Work in pairs. Choose one of the cartoons and discuss its meaning. Usethe words and expressions from the reading passage and the Usefulexpressions to help you. How humans influence nature ? Factories that let out greenhouse gases are heating up the earth.. What would happen to... if...? ... are suffering from... It is no surprise that... What a(n)... thing to think about! The rapid development of human society has made us... We need to think more about... Useful expressions Production Exercise 07 Exercises 一、单项选择 1．Few things ________ we do can change the earth little by little. A．which B．that C．who D．where 2．All ________ we can do is to protect the natural balance. A．that B．which C．who D．whose 3．The river ________ runs through our city is very clean now. A．who B．that C．what D．where 4．The volunteers ________ protect wetlands are warmly praised. A．that B．what C．where D．when A B A B Exercises 5．The waste ________ pollutes rivers must be controlled strictly. A．who B．that C．what D．when 6．The trees ________ we planted last year grow taller day by day. A．/ B．what C．where D．when 7．Those ______ never give up are the bravest people. A．which B．who C．whose D．what 8．The book ________ is on the table is mine. A．who B．where C．which D．when C B A B Exercises 9．—We should save water in our daily life. —________. Every drop counts. A．I can’t agree more B．Don’t mention it C．I don’t think so D．Don’t worry 10．—________ is the population of your hometown? —It’s about 500,000. A．How many B．How much C．How D．What 11．Many tourists come to Anhui to ________ the beautiful ancient villages in Hongcun and Xidi. A．admire B．control C．scare D．recommend 12．As long as you admit your mistake and say sorry, the ________ can be reduced. A．argument B．punishment C．possibility D．protection B A D A Exercises 13．The old man didn’t go to bed ________ he finished reading the novel last night. A．because B．until C．if D．after 14．With the ________ development of AI technology, more people are using smart robots in daily life. A．gentle B．rapid C．hidden D．certain 15．We don’t permit ________ in the reading room. But you are permitted ________ in the hall. A．smoking; to smoke B．to smoke; to smoke C．smoking; smoking D．to smoke; smoking A B B Exercises 1．直到人们重视环保，濒危物种的幸存概率才会逐步提升。 The survival chance of ________________ will improve gradually ________ people pay attention to environmental protection. 2．社会的发展不能以损害自然环境和过度捕捞海洋生物为代价。 The development of ________ can’t ________ ________ harming the natural environment and ________ marine life. 3．外国游客纷纷前来欣赏这片保持着自然平衡的净土。 Many ________ ________ come to ________ this pure land which keeps natural ________. 4．We love nature. It gives us energy and life. (合并句子) We love nature ________ ________ us energy and life. 5．影响生态平衡的小事都不容忽视。 Small things ________ ________ the ecological balance cannot be ignored. 二、完成句子   endangered species      till society  come      at      overfishing foreign     tourists      admire      balance  that/which     gives  that/which    influence Exercises 6．The action is useful. We take the action. (合并为定语从句) The action ________ ________ ________ is useful. 7．Nothing can stop us. It harms the environment.（合并句子） Nothing ________ harms the environment ________ stop us. 8．所有能保护野生动物的行动都值得坚持。 All actions ________ ________ protect wild animals are worth keeping. 9．The forest is huge. It protects many wild animals.（合并定语从句） The forest ________ ________ many wild animals is huge. 10．这是我们守护自然平衡的唯一方法。 This is the only way ________ ________ ________ keep the balance of nature.   that/which     we      take  that      can  that      can  that/which     protects that      we      can Homework 08 Homework A层【基础层 全体必做】 1. 熟读课本 Save the oceans 网页语篇，朗读定语从句； 2. 完成课本练习⑥、⑦，抄写3组that/which/who例句。 B层【提升层 中等学生】 1. 完成A层全部； 2. 用定语从句写5句话描述身边环境问题（如factories，rubbish，animals等）。 C层【拓展层 学有余力】 1. 完成A+B； 2. 小短文（6080词）：What can we do to protect oceans，尽可能多用定语从句that / which / who。 感 谢 观 看 $