(共17张PPT)
人教版(新起点)小学英语三年级下
Unit 1: My School
基数词序数词
Homework
法
基数词
表示个数的词叫基数词
1-0ne
9-nine
九
2-wo两个
12-twelve
十二个
3- three三个
20-twenty
二十个
4-four
个
21- twenty-one二十一个
5-five五个
30-thirty
三十个
几
十几
几十
one
eleven
two
twelve
twen
three
thirteen
thirty
ff
our
fourteen
ve
fifteen
fifty
SIX
sixteen
SIX
seven
seventeen
seven
eight
eighteen
eigh
nine
nineteen
ninety
fen
基数词口诀
基数词不难记。找出规律就容易
0至12样各异
个一个单独记
one two
three four five six
seven eight nine ten eleven twelve
基数词口诀
后加teen变十几, thirteen fifteen看仔细
8需要看准确, eighteen只有一个t;
thirteen fourteen fifteen sixteen
seventeen eighteen
nineteen
基数词口诀
20到90加ty, twenty eighty.重点记;
forty去掉字母u, thirty fifty更出奇;
twenty thirty forty fifty
sixty seventy eighty
nine
基数词口诀
十位数后接个位,表示数字几十几
排列顺序不费力,连字符号别丢弃
twenty-one
thirty-two
ninety-nine
基数词口诀
写到几百几十几,and把百与十系
巧学巧记加努力, hundred是你的好成绩。
Oone hundred and twenty-one
five hundred and ninety-nine
O seven hundred and thirty-two
Homework
法
序数词
表示次序的词叫基数词
first(1
ninth(9)第九
second(2)第二
welfth(12)第十二
third(3)第三
wentieth(20)第二十
fourth(4)第t
twenty-fist(21)第二十一
fifth(5)第五
thirtieth(30)第三十