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1、第四課時(shí)Section B (1a1d)Unit 7Whats the highest mountain in the world?weigh的用法作及物動(dòng)詞，表示“稱(chēng)的重量”。eg：Cao Chong thought of a way to weigh the elephant.曹沖想出了一個(gè)稱(chēng)大象的辦法。作不及物動(dòng)詞，表示“重”，后接數(shù)字。eg：She weighs 50 kilos.她的體重是50千克?！就卣埂縲eight名詞，意為“體重；重量”。倍數(shù)表達(dá)法1用形容詞表示甲是乙的幾倍時(shí)，有以下三個(gè)句型：倍數(shù)形容詞/副詞比較級(jí)thaneg：This hall is four times b

2、igger than my classroom.這個(gè)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。2用名詞表示“量”的倍數(shù)時(shí)，有以下兩個(gè)句型：倍數(shù)more名詞thaneg：There are four times more books in our library than in yours.

3、我們圖書(shū)館的藏書(shū)(數(shù)量)是你們圖書(shū)館的四倍。倍數(shù)as many/much名詞其他aseg：There is three times as much water in this cup as in that one.這個(gè)杯子里的水(量)是那個(gè)杯子里的三倍。 重點(diǎn)短語(yǔ)歸納at birth出生時(shí)live up to活到一、單項(xiàng)選擇。( )1.Linda，you look thinner.How much do you _ now?About 50 kilos.AdevelopBriseCdropDweigh( )2.Becoming a father means that he is a(n) _

4、now.Aadult Bgentleman Cforce DnatureDA( )3.John Smith is _ of the two young men.Astrong Bstronger Cthe stronger Dthe strongest( )4.The Sahara is about 210 _ the Taklamakan，the largest desert in China.Atimes as large as Btimes as larger asCtime as larger as Dtimes larger( )5.I know _ about this city

5、than you，so tell me some please.Alittle Bmore Cless DmuchCAC( )6.The worlds population is growing _ and there is _ land and water for growing rice.Alarger；less Blarger；fewerCmore；less Dmore；fewer( )7.Tom is six and he is _ his sister Jane.How old is Jane?Three.Atwice as old as Bas twice old asCas ol

6、d as twice Das old twice asAA二、根據(jù)漢語(yǔ)意思完成句子。8他爸爸的體重是他的三倍。His father weighs him.9將來(lái)人們可以活到200歲。People will 200 years.10這棵樹(shù)比那棵高兩米。The tree is than that one.11它每天吃掉兩公斤食物。It eats two kilos of food 12熊貓可以兩條腿站立。Pandas can stand 13嬰兒出生時(shí)通常閉著眼睛。A baby usually closes his eyes three times as much aslive up totwo

7、meters tallera dayon two legsat birth三、根據(jù)對(duì)話內(nèi)容，從方框中選擇恰當(dāng)?shù)倪x項(xiàng)補(bǔ)全對(duì)話，其中有兩項(xiàng)多余。A：Hi，friends！Welcome to my town.Im your guide，Miss Lin.You can ask me anything.B：OK.14._A：Its over 45，000.B：15._A：Its over 1，000 years old.Its an old town.B：Wow，its so old.16._A：Qin River.Its more than 800 meters.B：17._AHow old is it?FACDBWhats the matter?CWhich is the longest river here?DWhere is it?EWhy dont we take a bus there?FWhats the population of your town?GHow far is it from here?A：Its in the southwest (西南) of our town.B：18._A：Its about 3 kilometers.Ill take you there later.B：I see.Thank you.G