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1、B lets learn,四年级下册英语Unit4,Lets sing,击掌拼读单词,全班学生一起反复读first到fifth，当老师击掌时，全班快速拼读该单词。,Free talk (pair work),How many months are there in a year? Whats your favourite month? When is Chinas National Day? When is Childrens Day?,first,1st,2nd,third,3rd,fourth,4th,fifth,5th,second,one,two,three,four,five,基数词
2、,序数词,缩写,six,seven,sixth,eight,nine,ten,基数词,序数词,t,e,seventh,tenth,eighth,ninth,eleventh,eleven,缩写形式,10th,twelve,twelfth,12th,13th,thirteen,thirteenth,twenty,twentieth,20th,thirty,thirtieth,30th,基数词,序数词,缩写形式,fourteen,fourteenth,14th,fifteen,fifteenth,15th,sixteen,sixteenth,16th,seventeen,seventeenth,1
3、7th,eighteen,eighteenth,18th,nineteen,nineteenth,19th,twenty-one,21st,基数词,序数词,缩写形式,twenty-two,twenty-three,twenty-four,twenty-first,twenty-second,twenty-third,twenty-fourth,22nd,23rd,24th,要是遇到两位数，十位基数个位序，th最后加上去。,thirty-one,31st,thirty,thirtieth,30th,基数词,序数词,缩写形式,thirty-two,thirty-three,thirty-four,
4、thirty-first,thirty-second,thirty-third,thirty-fourth,32nd,33rd,34th,基数词变序数词口诀,一，二，三，单独记， 八去t，九去e，ve要用f替， 整十去y改ie，然后再加th； 要是遇到两位数，十位基数个位序，th最后加上去。,手心手背,学生根据老师的手势，快速读出单词。 手心朝上读twelfth，手心朝下读twentieth。 手心朝上读thirty，手心朝下读thirtieth。,Whats missing?,twelfth,twentieth,thirtieth,thirty-first,twenty-fourth,twe
5、nty-ninth,twenty-second,twenty-third,写出缩写形式,twentieth twelfth thirtieth twenty-first twenty-third twenty-second,20th,12th,30th,21st,23rd,22nd,1st, 2nd, 3rd 为特殊形式，其他都是数字后加上th,Lets learn,When is Grandpas birthday?,Its on October 12th.,Look and write 写出缩写形式,Look and say,March 8th,September 10th,Decembe
6、r 25th,March 12th,When is .? Its on _.,Practice,一、按要求改写下列单词。 1. August(缩写词) 2. Apr.(完整形式) 3. twelve(序数词) 4. twenty(序数词) 5. thirty-one(序数词) 6. second(基数词) 7. first(基数词) 8. 23rd(完整形式),Aug.,April,twelfth,twentieth,thirty-first,two,one,twenty-third,二、选择填空。 1. My birthday is _ March 24th. A. in B. on C.
7、at 2. There are _ days in February. A. 27th B. 28 C. 28th 3. When is the sports meet? Its on April _. A. 3rd B. two C. three 4. _ is on April 1st. A. Easter B. April Fools Day C. Christmas,Practice,B,B,A,B,first,third,second,fourth,birthday,fifth,大声读出飞机中的单词,Homework,1.抄单词表unit 4第十二到第三十的单词，每个两行，每行4个，单词本，家长签名，写中文和标题，按照抄写本格式写，明天交。 2.读42页内容。,
