第四课时　Section B (1a－1d).ppt

人教版八年级下册,英语,Unit 7Whats the highest mountain in the world,Section B 1a-1d,情景导入,Animals are friends of our humans.They share the same planet with us.So we should learn to protect them.,Whats your favorite animal?,Panda,单词展示,cm=centimeter/centimetre,厘米,n.出生；诞生,birth,adult,adj.成年人的；成人的,n.成人；成年动物,生成新知,Compare facts about these two animals.Use the language in the box to help you make sentences.,Elephant is 350 cm tall weighs 5,000 kilos eats 150 kilos of food a day,Panda is 150 cm tall(standing on two legs)weighs 100 kilos eats 10 kilos of food a day,Example sentence:,This elephant weighs many times more than this panda.(200 cm taller/shorter,weigh much more/less,eat much more/less,eat many times more),For example:,Try to describe the elephant using the information above.,1.This elephant is 350 cm tall.,2.It weighs 5,000 kilos.,3.It eats 150 kilos of food a day.,Try to describe the panda using the information above.,For example:,The panda is 150 cm tall when it is standing on two legs.,2.It weighs 100 kilos.,3.It eats 10 kilos of food a day.,Listen and check()the numbers you hear.,_ 100 _ 16 _ 20 _ 50 _ 120 _ 0.1 _ 0.2 _ 150,Listen again and complete the sentences.,1.At birth,a baby panda is about _ to _ kilos.2.At birth,a baby panda is about _ cm long.3.A baby panda is not black.It is _ and it has no _.4.A panda can live up to _ to _ years.,0.1,0.2,15,pink,20,30,teeth,Tapescripts,Teacher:Do you have any questions about baby pandas?Boy 1:Are they much smaller than an adult panda?Teacher:Yes.When theyre born,they only weigh about 0.1 to 0.2 kilos.,小很多,Boy 1:Wow,thats small!I know an adult panda weighs many times more than a baby.Teacher:Thats right.And the adult pandas weigh about 100 kilos.,很多倍,Boy 2:What about the size of a baby panda?How small is it?,Teacher:At birth,its only around 15 cm long,but an adult panda is around 150 cm long.Girl:Is a baby panda also black and white?,Teacher:No,you would never guess!A baby panda is pink and it cannot see.It also doesnt have any teeth.,Girl:How long can pandas live?Teacher:They can live up to 20 to 30 years.,长达年,Take turns telling your classmates about pandas.,A:A baby panda cannot see.,B:An adult panda weighs many times more than a baby panda.,情景表演,A baby panda is pink and it doesnt have any teeth.,At birth,a baby panda is only around 15 cm long.,The adult pandas weigh around 100 kilos.,Pandas can live up to 20 to 30 years.,问题探究,1many times more than,(1)“A谓语动词倍数形容词/副词的比较级thanB”表示“A比B多少倍”。,例句：He runs three times faster than his brother.他跑得比他弟弟快三倍。,many times more than 意为“比多很多倍”，是倍数的表达方式之一。,英语中常用的倍数表达法：,(2)“A谓语动词倍数as形容词/副词的原级asB”表示“A是B的多少倍”。,例句：His father is twice as tall as he.他父亲的身高是他的两倍。,This tree is three times as tall as that one.这棵树是那棵树的三倍高。,(3)“A谓语动词倍数the height/weight/lengthofB”表示“A的高度/重量/长度是B的多少倍。”,例句：This hill is four times the height of that small one.这座山的高度是那座小山的四倍。,2up to,up to意为“到达(某数量、程度等)；至多有；不多于”，其中to为介词，后接名词作宾语。,例句：Up to ten people can sleep in this tent.这个帐篷最多能睡十人。,Our football team played up to its best in the last match.我们的足球队在上次比赛中发挥了最高水平。,【拓展】,up to 还可表示“(体力或智力上)能胜任；适于(做某事)”，后可接名词或动词作宾语。常用于否定句。,例句：Hes not up to the monitor.他无法胜任班长。,Hes not really up to seeing any visitors.他的身体不太适合见访客。,随堂练习,I.根据句意及汉语提示完成句子。1The _(大象)is a friendly animal.2The _(熊猫)in the park are so cute that many tourists take photos of them.3My little brother _(重)50 kilos.4At _(出生)，the baby is only 50 cm long.5Tom has _(更多)friends at school than any other student.,elephant,pandas,weighs,birth,more,II.完成句子。,1.He _(weight)only 70 kilos now after taking a balanced diet.,weighs,2.他父亲的年纪有他两倍大。His father is _ _ _ as he.,twice as old,见学生用书,布置作业,