Unit 7 课时3 Section B（1a-1d)【教案+学案】-【帮课堂】2022-2023学年八年级英语下册同步精品讲义（人教版）

Unit7 What’s the highest mountain in the world？ 课时3 Section B（1a-1d） Learning aims: 1. To learn to use comparatives to compare facts about elephants and pandas. This panda is 200 cm shorter than this elephant. 2. To listen for specific information about numbers. 3. To be able to talk about pandas. 4. To learn new words: weigh, birth, adult… 重点词汇和短语 1. _________________ v. 称……重量 2. _________________ n. 出生，诞生 3. _________________ n. 成年人 4. ___________________________ 出生时 5. ___________________________ 到达（某数量，程度），不多于 答案： 1. weigh 2. birth 3. adult 4.at birth 5.up to 1. This elephant weighs many times more than this panda. 这只大象比这只大熊猫重很多倍。 （1）weigh既可作及物动词，表＂称重＂，也可作连系动词，表＂有……重；重＂。 I weighed the box. It weighs 20 kg. 我称了这个盒子，它重20公斤。 She is afraid of becoming fat. She weighs herself every day. 她怕发胖。每天都称体重。 【知识拓展】　 其名词形式为weight。常用短语：in weight在体重方面。 The boy weighs 20 kg. ＝The boy is 20 kg in weight. 这个男孩重20公斤。 He ____________（weight）only 70 kilos now after taking a balanced diet. 【答案】weighs （2）time在此意为＂倍数，次数＂，表示三倍或三倍以上时使用。表示 ＂A 比B长（宽、高、大、重等）N倍＂时，其结构为＂A＋be＋基数词（N＋1）＋times＋形容词比较级＋than＋B ＂。 This hall is five times bigger than our classroom. 这个大厅比我们的教室大四倍。 I have been to Beijing three times. 我去过北京三次了。学科&网 【注意】＂两倍＂可用twice表示。 【知识拓展】　 表示＂A 的长度（宽度，高度，大小，重量等）是 B 的 n倍＂，可用 ＂A ＋ be ＋ 基数词（N）＋times ＋ as ＋ 形容词原级 ＋ as ＋ B＂结构。 This tree is three times as tall as that one. 这棵树是那棵树的三倍高。 His father is twice as old as he. 他父亲的年纪有他两倍大。 3）“A+谓语动词+倍数+the height/weight/length …+of + B” 表示“A的高度/重量/长度……是B的多少倍”。 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。 —I hear you’ve bought a new house. —Yes, it costs too much. Anyway, it’s ___________ my old one. A. twice as big as B. as twice big as C. bigger two times than D. two times bigger as 【答案】A 2. A panda can live up to 20 to 30 years. 大熊猫能活20至30岁。 up to到达(某数量、程度等)；至多有；不多于。live up to指＂活到……岁＂。 There are up to seventy students in the classroom. 教室里学生不多于七十人。 The old man can live up to ninety y