Unit 8 When is your birthday? 习题课件(3课时)2023-2024学年英语人教版七年级上册
日期:2025-04-26科目:英语类型:初中课件查看:93次大小:576864B来源:二一课件通
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(课件网) Section A (Grammar Focus~3c) Unit 8 When is your birthday? 英语 序数词 表示顺序的词叫作序数词,英语序数词由基数词加-th构成,但有些序数词是特殊形式。 1.序数词的构成 (1) 第1至第19 其中first,second,third,fifth,eighth,ninth,twelfth为特殊形式,其他序数词都是由其相对应的基数词后面添加-th构成。 six→sixth 第六 nineteen→nineteenth 第十九 (2)第20至第99 整数第几十的形式由其对应的基数词改结尾字母y为i,再加-eth构成。 twenty→twentieth 第二十 thirty→thirtieth 第三十 表示第几十几时,用几十的基数词形式加上连字符“-”和个位序数词形式一起表示。 thirty-first 第三十一 fifty-sixth 第五十六 seventy-third 第七十三 ninety-ninth 第九十九 (3)100以上的多位序数词由基数词变结尾部分为序数词形式来表示。 one hundred and twenty-first 第一百二十一 one thousand,three hundred and twentieth 第一千三百二十 2.序数词的缩写形式 有时,序数词可以用缩写形式来表示。 first→1st second→2nd third→3rd fourth→4th sixth→6th twentieth→20th twenty-third→23rd 其中1st,2nd,3rd为特殊形式,其他都是在阿拉伯数字后加-th。 3.序数词的句法功能 序数词在句中可作主语、宾语、定语和表语。 The second is what I really need. 第二个是我真正需要的。(作主语) He choose the second.他挑选了第二个。(作宾语) We are to carry out the second plan. 我们将执行第二个计划。(作定语) She is the second in our class. 在我们班她是第二名。(作表语) 注意:序数词在使用时,前面通常要加定冠词the;但是如果序数词前出现不定冠词a或an时,则表示“再一;又一” 。 We’ll go over it a second time.我们得再念第二遍。 We’ve tried it three times.Must we try it a fourth time? 我们已经试过三次了,还必须再试一次(第四次)吗? 另外,基数词也可以表示顺序或编号,只需将基数词放在它所修饰的名词之后即可,不需添加定冠词。 the first lesson→Lesson One the fifth page→Page Five the twenty-first room→Room 21 ———基础夯实——— 一、用所给词的适当形式填空。 1.January is the first (one) month of the year. 2.Her second (two) child is very different from her first (one). 3.This is the fourth (four) new word in the third (three) passage. 4.Tom lives on the ninth (nine) floor. 5.This is Alan’s twelfth (twelve) birthday. first second first fourth third ninth twelfth 7.The thirtieth (thirty) cat is black and white. 8.That’s the nine hundred and ninety-ninth (nine hundred and ninety-nine) rose. thirtieth nine hundred and ninety-ninth 6.V is the twenty-second (twenty-two) letter in the English alphabet. twenty-second ———能力提升——— 二、语法选择。 Four weeks before my mom’s 1 birthday,Dad said to me,“Jason,I’d like 2 something special for your mother.How about giving her 3 surprise party?” I thought it was a great idea.Then we started planning.Mom loved rivers,so Dad booked a party boat with a karaoke machine (卡拉OK机).This was good because Mom enjoyed 4 . Dad invited 5 friends,neighbors and workmates.He even invited some of 6 old school friends.They pro ... ...