人教版八下英语Unit7第3课时（B1a-1d）教学课件

人教版八下英语Unit7第3课时（B1a-1d）教学课件

R·八年级下册 Unit 7 What’s the highest mountain in the world? Section B 1a-1d New Words cm=centimeter weigh (v.) birth (n.) adult (adj.& n.) /ˈsentɪmi:tə(r)/ /weɪ/ /bɜː(r)θ/ /ˈædʌlt/, /əˈdʌlt/ 厘米(=centimetre) 重量是……；称……的重量 出生；诞生 成年人的；成人的 成人；成年动物 New Phrases 出生时 到达（某数量、程度 等）；至多有；不多于 at birth up to Words game cm (centimeter)at birthadultup tob r hweig根据星星中的英文 说出中文意思！ Lead-in How much do you know about elephants and pandas? 大象是现存世界最大的 陆栖动物，主要外部特 征为柔韧而肌肉发达的长鼻 和扇大的耳朵，具缠卷的功 能，是象自卫和取食的有力 工具。象肩高约2米，体重 3～7吨。非洲象耳大，体型 较大，体重较重。亚洲象耳 小，身体较小，体重较轻。 大熊猫最奇特的一点 是新生儿在出生时相当的不成 熟，体重仅是它母亲体重的 0.1%，平均为145克左右， 约为成年的千分之一。照顾孩 子是一项非常艰巨的任务，通 常历时18个月，有时长达两年， 直到她的下一个孩子出生。 1a 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) Elephant - is 350 cm tall - weighs 5,000 kilos - eats 150 kilos of food a day Try to describe the elephant using the information above. For example: 1. This elephant is 350 cm tall. 2. It weighs 5,000 kilos. 3. It 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 Try to describe the panda using the information above. For example: 1. 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. This elephant is 200 cm taller than this panda. This elephant weighs much more than this panda. This elephant eats much more than this panda. This elephant eats many times than this panda a day . 1b Listen and check(√) the numbers you hear. ____ 100 ____ 16 ____ 20 ____ 50 ____ 120 ____ 0.1 ____ 0.2 ____ 150 √ √ √ √ √ 1c 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 听力原文 Teacher: Do you have any questions about baby pandas? Boy 1: Are they much smaller than an adult panda? Teacher: Yes. When they’re born, they only weigh about 0.1 to 0.2 kilos. 小很多 Boy 1: Wow, that’s small! I know an adult panda weighs many times more than a baby. Teacher: That’s 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, it’s 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 doesn’t have any teeth. Girl : How long can pandas live? Teacher : They can live up to 20 to 30 years. 长达……年 Try to make cards for adult panda and baby panda. You can use the cards in 1a as examples. Then work in pairs and compare the adult panda and baby panda. 1. This elephant weighs many times more than this panda. Ø weigh “重量是……”，在此句中作系动词； 意为“称……的重量”时作及物动词。 你上次是什么时候称的体重? When did you weigh yourself last time? Language points weight为weigh的名词形式，是 不可数名词，意为“重量”： weight gain/put on weight 增肥 lose weight 减肥 拓 展 （江苏泰州中考） What a pity! Sue lost the game because the _______ (weigh) of her shoes made it difficult for her to run fast. weight Ø …many times more than… “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有： （1）“A+谓+倍数+形/副的比较级+than + B” A是B的多少倍（大/小/长……） 例：他跑得比他弟弟快三倍。 He runs three times faster than his brother. （2）“A+谓+倍数+as+形/副的原级+as+B” A是B的几倍 例：我们的学校是你们学校的两倍大。 Our school is twice as big as yours. （3）“A+谓+倍数+the height/weight/length/size … +of + B” A是B的几倍（高/重/长/大……） 例：这座山的高度是那座小山的四倍。 This hill is four times the height of that small one. （1）他跑得比他弟弟快三倍。 He runs ____________________ his brother. （2）这棵树是那棵树的三倍高。 This tree is ____________________ that one. （3）这座山的高度是那座小山的四倍。 This hill is ____________________ that small one. three times faster than three times as tall as four times the height of 演练 Our teacher tells us that the earth is about ______ as the moon. A. as fifty time big B. fifty times as big C. as big fifty times D. fifty as times big 2. At birth, a baby panda is about 0.1 to 0.2 kilos. Ø at birth“出生时”，相当于when it was born。 birth为不可数名词，意为“出生；诞生”。 例：出生时，这个婴儿大约3公斤。 At birth, the baby was about three kilos. 3. A panda can live up to 20 to 30 years. Ø up to意为“到达（某数量、程度等）；不多于”。 In some areas of Africa, children get educated up to 12 years old. 在非洲的一些地区，孩子最多受教育到12岁。 Ø be up to sb. 意为“由某人决定”。 拓 展 例：——爸爸，我们去那里度假？ ——由你决定。 —Where shall we go for vacation, Daddy? —It’s up to you. Ø up to 的相关短语 up to now go/walk up to live up to run up to 直到现在 走到，走上前 达到；不辜负（期望） 跑到（某人面前） 总计，一共add up to be up to up to date 由某人决定 新式的；现代的； 至今，到目前为止 Her school work isn’t quite______ the mark. A. lead to B. turn to C. used to D. up to 1d Take turns telling your classmates about pandas. An adult panda weighs many times more than a baby panda. A baby panda cannot see. A baby panda is pink and it doesn’t 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. Key words: weigh birth adult Phrases: at birth up to Sentences: This elephant weighs many times more than this panda. Exercise 1. My grandma is a happy and healthy woman and she’ll live ___ 100 years old. A. up to B. to C. up D. being 2. David jumped the ____ in the long jump. He won the game! A. longest B. fastest C. highest D. farthest 一、单项选择。 3. It was a hundred times _______ than I’d expected. A. fun B. more fun C. the most fun D. funny 4. Look at the cute baby over there. He is about 50cm long _______ birth. A. for B. on C. in D. at 二、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