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Unit 8 Our Blue Planet Lesson 5 Grammar in Use Learning Objectives In this class, you will 理解数字的结构、含义和使用方法以及祈使句的用法 使用本单元所学语法知识获取不同水域的特点并描述如何 节约用水 树立节约用水的意识 Guessing Game What’s it? It’s the...? the Qinghai Lake How large is it? It covers about 4,600 square kilometers(平方公里). We use a comma every 3 digits from the right when the number is greater than 999. 英文数字的读法:从右到左,三位一节,节与节之间用逗号隔开,逗号从右到左分别读作thousand, million, billion。所以该数字读作four thousand, one hundred and eight-six。 Guessing Game What’s it? It’s ...? the Changjiang River How long is it? It is about 6,300 kilometers long. Can you read this number? Yes. It’s six thousand three humdred. Guessing Game What’s it? It’s...? the Arctic Ocean(北冰洋) How long is the coastline of it? It is about 45,390 kilometers long. Can you read this number? Yes. It’s forty five thousand, three hundred and ninety. Guessing Game What’s it? It’s ...? the Atlantic Ocean(大西洋) How large is it? It covers about 93,000,000 kilometers. Can you read this number? Yes. It’s ninety-three million. Summarizing Activity 2 Read the numbers and complete the table. 4,186 four thousand, one hundred and eighty-six 45,390 forty-five _, three _ and ninety 6,363,000 six million, three hundred and sixty-three thousand 1,386,000,000 one billion, three hundred and eighty-six _ 909,090,009,900 nine hundred and nine _, ninety _, nine _, nine hundred thousand hundred million billion million thousand Applying Activity 3 Complete the sentences with the numbers in the brackets. fourteen million and two hundred thousand eleven thousand, three hundred and fifty three hundred and sixty million three hundred and seven million Antarctica is about _(14,200,000) square kilometers in size, and ice covers about 98 percent of the land. The Sea of Marmara is about _(11,350) square kilometers. Oceans cover about_(360,000,000) square kilometers of the earth. There are about _ (307,000,000) lakes in the world. 南极洲 马尔马拉海 Observing Activity 1 Pair work. Read the conversation. Pay attention to the imperative sentences. (Xiao Ya is knocking on the door.) Come in, please Oh, don’t put it here. Please put it on that big chair. Miss Wang, here is the poster about saving the ocean. Can I put it on the table? Summarizing Activity 2 Complete the table and learn how to use imperative sentences. Positive Negative _ every drop of water. Don’t _ waste into the lakes. _ enough water. _ waste water. Save water, save our planet! No _ in that lake. _ your step! The floor is wet. Never _ the water running. Let’s _ a poster about saving water. Let’s not _ here! Save Drink Mind make throw Don’t swimming keep speak Applying Activity 3 Match the pictures with the words or phrases, and then make imperative sentences. litter take a shower swim turn off collect fish Applying Activity 3 Match the pictures with the words or phrases, and then make imperative sentences. litter take a shower swim turn off collect fish Turn off the tap while brushing teeth. Don’t litter around. … Required homework(必做): 1. 背书上28,29页的单词和短语. 2.造句:用下列红色字体的短语造句1. When Xue Baochai was reading, she always paid attention to every word in the classic books, just like she paid great attention to the rules and etiquettes in the Grand View Garden.(薛宝钗读书的时候,总是留意着经典书籍里的每一个字,就像她在大观园里十分注重规矩和礼仪一样。) 2. One night, Shi Xiangyun, being a bit tipsy, playfully knocked on the door of Lin Daiyu's room, eager to share her thoughts and have a chat with her dear cousin.(一天晚上,史湘云有点微醺,俏皮地敲着林黛玉房间的门,急切地想和她亲爱的表姐分享心事、聊聊天。) 3.有默写清单就背诵默写清单,第二天默写。 Optional homework(选做): 根据本节课所学内容,写五个祈使句。 Homework Lavf58.46.101 vid:v0d00fg10000comc3e3c77ue79jhirm0 $$