七年级英语上册unit-8-序数词.pptx

Do you know how many months there are in a years?There are 12 months in a year. What are they?January[d??nju?ri] Jan.February[febru?ri] Feb.March[mɑ:t?] Mar.Apr.[eipr?l] AprilMayMay[mei] Jun.June[d?u:n] July[d?u(:)lai] Jul.August[?:g?st] Aug.September[septemb?] Sept.Oct.[?kt?ub?] OctoberNovember[n?uvemb?] Nov.December[disemb?] Dec.Jan.1. January 2 .February 3 .March 4 .April 5 .May 6 .June 7 .July 8 .August 9 .September 10. October 11 .November 12 .December Feb.Mar.Apr.MayJun.Jul.Agu.Sept.Oct.Nov.Dec.基数词：用来表示数目序数词：用来表示顺序，意味“第几”数词序数词用法：1.序数词在使用时，一般加上定冠词(the)或形容性物主代词 the second floor This is my first class.2.给人或物编号时，序号在名词前用序数词，在名词后用基数词 The fifth page = page five 第5页 基数词 one two three four five six seven eight nine ten 序数词 first second third fourth fifth sixth seventh eighth ninth tenth基数词 eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen 序数词eleventhtwelfththirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenth 基数词 twenty-one twenty-two twenty-three twenty-four … thirty-one one hundred and one 序数词twenty-firsttwenty-secondtwenty-thirdtwenty-fourth…thirty-firstone hundred and first 基数词 twenty thirty forty fifty … ninety hundred 序数词twentieththirtiethfortiethfiftieth…ninetiethhundredth基数词变序数词序，有规律，加上th莫迟疑。1 2 3 特殊记，词尾字母t，d，d。8 去 t， 9 去 e， y结尾的变为 ie。 five、twelve两兄弟，常以 f代ve。若遇到几十几，只变个位就可以。基数词基数词序数词序数词one two three four five six seven eight nine ten eleven twelve first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twentieth twenty-first twenty-second twenty-third thirtieth thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty twenty-one twenty-two twenty-three thirty1st2nd3rd21st22nd23rd30th 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th is the first month of the year.secondthirdfourthfifthsixthseventhis the month of the year.e