1、Unit 9 Its one hundred守护甜心 WendyIs this right,Miss Li?Yes,its right.Good!Thank you!Please think again.Forty-six and fifty-four is.Oh!Im wrong!Its one hundred.13 thirteen 14 fourteen15 fifteen 16 sixteen17 seventeen 18 eighteen19 nineteen13-19数词构成方法：在有关的个位数词词尾加-teenRead and count19+1=20nineteen pluso
2、neistwentytwentythirtyfortyfiftysixtyseventyeightyninetyone hundred12+8=24+6=38+2=42+8=53+7=67+3=71+9=82+8=99+1=20 twenty30 thirty40 forty50 fifty60 sixty70 seventy80 eighty90 ninety100 a hundred整十位数数词20-90构成：个位数词词尾加-tytwenty-two twenty-three twenty-four twenty-fivetwenty-six twenty-seventwenty-eight twenty-ninetwenty+one=twenty-one十位数数词构成：整十位数数词后加个位数词，中间用连字符号“-”连接。Say a rhyme英语数词不难记，找出规律就容易。一至十二词各异，一个一个单独记。后面加teenteen变十几 thirteen，fifteen看仔细。eighteen只有一个t，两个音节念清晰。二十至九十后加ty，twenty不同重点记。forty去掉字母u，thirty，fifty更出奇。十位数后个位数，表示数值几十几，按序排列不费力，连字符号莫丢弃。巧学妙记加努力，hundred是你的好成绩！
