2020年人教版七年级（上）英语第14讲：unit 7 语法篇-教师版和学生版

Unit7语法篇 基数词 1. 基数词表示数目或数量的多少。 2. 基数词的表达法   one 1 eight 8 fifteen 15 thirty 30   two 2 nine 9 sixteen 16 forty 40   three 3 ten 10 seventeen 17 fifty 50   four 4 eleven 11 eighteen 18 sixty 60   five 5 twelve 12 nineteen 19 seventy 70   six 6 thirteen 13 twenty 20 eighty 80   seven 7 fourteen 14 twenty-one 21 ninety 90 3. 基数词书写的几点注意事项： (1) one到twelve，拼写和读音没有什么相似之处，无规律可言，应逐一记忆。 (2) thirteen到nineteen，表示“十几”，在个位数后加后缀-teen，读作/ti:n/。其中要注意thirteen, fifteen和eighteen的拼写。 (3) twenty到ninety，表示“几十”，以-ty结尾，但需注意下面几个词的拼写：twenty, thirty, forty, fifty, eighty。 (4) 21-29直到91-99，表示“几十几”，用整十位数加个位数表示，中间用连词符“-”把十位数和个位数连接起来。 21  twenty-one       35  thirty-five  (5) one hundred意为“一百”，表示一百还可以用a hundred。要表示200-900，用“具体数字+hundred”。  200 two hundred      900 nine hundred 4. 用法 (1)表示年龄，基数词放在years old之前。   He is twelve years old. (2)用来表示人或物的数量，放在名词之前。   I have three balls. (3)表示顺序、编号等，放在名词之后。   I’m in Class Four. (4)用来计算。   Two and six is eight. 单项选择 1.（贵州安顺中考改编）---David ,how old is your father this year ? --- . A. Four B. Forty C. Fourty D. Fourteen 2.（四川宜宾中考）---If a=2 and b=4, what's the answer to the problem :a+b+1= ? ---The answer is . A. twelve B. nine C. eight D. seven 3. and seven is twelve? A. Five B. Six C. Seven D. Eight 4.---A week has days . A. six B. five C. seven D. eight 5. My daughter is . A. eleven B. eleven-years old C. eleven old D. eleven-year old 6.---Tom is a student . He's in ? A. the class 5 B. Class 5 C. five class D. fifth class 7.---What's twelve and thirteen ? ---It's . A. twenty fifth B. twenty-five C. five-twenty D. twelve and thirteen 基础演练 一、用英文数字填空 1. forty-eight - twelve= ___________ 2. ninety + five = __________ 3. thirteen + seven = __________ 4. eighty - forty= ___________ 5. seventy - fourteen = ___________ 6. eighty - sixteen = ___________ 7. sixty - thirteen = ___________ 二、单词拼写(单句首字母填空) 1. My class has t   students, ten girls and twenty boys. 2. There a