Unit 7 Section B（1a-1e）课件 2023-2024学年人教版七年级英语上册

How much are these socks? Section B 1a-1e — How much is this…? — It’s…dollars. — It’s $ 3. — It’s $ 7. — Please down. — It’s $ 4. — You are great. — Please up. You only have 3 guesses. ($2-$8) Guess the price Let's guess ($20-$25) ($15-$20) ($10- $15) — How much is this…? — It’s… dollars. $ 18 — How much are these…? — They’re…dollars. $ 23 $ 2 $ 14 ($1-$5) $ 11 ($7-$12) 10 11 12 13 14 15 16 17 18 19 ten eleven twelve -teen 20 21 22 23 24 25 26 27 28 29 -ty twenty-one twenty-two ... 30 31 32 ... -ty thirty-one thirty-two ... ... one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty thirty forty fifty sixty seventy eighty ninety twenty-one … twenty-nine thirty-one … thirty-nine forty-one … forty-nine fifty-one … fifty-nine sixty-one … sixty-nine seventy-one … seventy-nine eighty-one … eighty-nine ninety-one … ninety-nine hundred Learn these numbers and find out the rules: 掌握基数词的拼写。 Review Try to make conversations according to the pictures. How much is this…? It’s… dollars. How much are these…? They’re… dollars. $22 $12 $11 $20 $14 $18 $6 $16 Number Game 1 $ 38 -- $ 43 $ 40 $ 27 $ 23 -- $ 30 $ 10 -- $ 17 $ 13 $ 91 $ 86 -- $ 94 Number Game 2 3 8 11 eight seven fifteen fifteen five twenty 34 6 28 thirty-one six twenty-five twenty-two four eighteen 基数词的表达法 分类 表达法 示例 1-12 拼音和读写没有什么相似之处，无规律可循 One, two, three 13-19 在相应的个数后加-teen（13, 15, 18较特殊） Thirteen, fourteen, fifteen, sixteen, seventeen, eighteen 20-90 整十数 在相应的个数后加-ty（20, 30, 40, 50, 80较特殊） Twenty, thirty, forty, fifty, eighty 1-99 非整十数 整十数+连字符+个位数 Twenty-one, thirty-two, forty-three Discussion 讨论:基数词的构成规律 (1)0～12这十三个数字要单独记忆。 (2)13～19都是以“个位数字＋ ”构成，并且重音都在 ____ 上。同时我们还要注意thirteen（13）,fifteen（15）,eighteen（18）这三个数字的拼写。  (3)20，30……90都是以“个位数字＋ ”构成，但应注意 （20）， （30）， （40）______ （5