Unit 7Whats the highest mountain in the world?第四課時第四課時Section B (1a1d)weigh的用法作及物動詞，表示“稱的重量”。eg：Cao Cong thought of a way to weigh the elephant.曹沖想出了一個稱大象的辦法。作不及物動詞，表示“量”，后接數(shù)字。eg：She weighs 50 kilos.她的體重是50千克。【拓展】weight名詞，意為“體重；重量”。倍數(shù)表達(dá)法用形容詞表示甲是乙的幾倍時，有以下三個句型：倍數(shù)形容詞/副詞比較級thaneg：This hall is four times bigger than my classroom.這個大廳比我們的教室大四倍。倍數(shù)as形容詞/副詞aseg：Asia is four times as large as Europe.亞洲的面積是歐洲的四倍。倍數(shù)the size (height，length.)ofeg：The hill is four times the height of that small one.這座山的高度是那座小山的四倍。用名詞表示“量”的倍數(shù)時，有以下兩個句型：倍數(shù)more名詞thaneg：There are four times more books in our library than in yours.我們圖書館的藏書(數(shù)量)是你們圖書館的四倍。倍數(shù)as many/much名詞其他aseg：This is three times as much water in this cup as in that one.這個杯子里的水(量)是那個杯子里的三倍。重點短語歸納at birth出生時live up to活到 一、根據(jù)句意，選擇方框中的單詞并用其適當(dāng)形式填空。1Mom，I can look after myself well，I am already an _now.2That elephant _about 5，000 kilos.3Baby pandas doesnt have any _4Are pandas very small at_?Yes，and people need to take care of them very carefully.5The _cars people drive，the _pollution there will be.weighsteethbirthfewerlessadult二、單項選擇。( )6.Linda，you look thinner.How much do you _ now?About 50 kilos.AdevelopBrise Cdrop Dweigh( )7.I know _ about Jinzhou than you，so tell me some please.Alittle Bmore Cless Dmuch( )8.My pet dog feels like standing _ his two legs.Ain Bby Con DofDCC( )9.Do you know how to say 6，759 in English?Yes，_.Asix thousand seven hundred and fiftynineBsix thousand and seven hundred fiftynineCsix thousand seven hundred fiftynineDsix thousand seven hundred fifty and nine( )10.My garden is _ yours.(易錯題)Atwice larger than Bas large twice asClarger twice than Das twice large asAA三、情景交際：從方框中選擇合適的句子補全對話。A：How much do you know about baby pandas?B：Are they much smaller than an adult panda?A：Yes.11._B：Wow，thats small！I know a panda weighs many times more than a baby.A：Thats right.The adults weigh around 100 kilos.B：12._ How small is it?A：At birth，its only 15 cm long，but an adult is around 150 cm long.GDA：13._B：No，a baby panda is pink and it cant see.14._A：How long can pandas live?B：15._AIt also dont have any teeth.BThey can live up to 20 to 30 years.CWhat colour is the baby panda?DWhat about the size of a baby panda?EIs a baby panda also black and white?FIt can eat 10 kilos of food a day.GWhen theyre born，they only weigh about 0.1 to 0.2 kilos.EAB