七年级上册英语基数词变序数词
英语基数词变序数词口诀
英语基数词汇变序数词汇心诀之阳早格格创做基变序，有顺序，词汇尾加上-th.一，二，三，特殊记，词汇尾字母t，d，d.八去t，九除e，ve要用f替，ty将y形成i，th前里有个e.假如逢到几十几，前用基去后用序.整十基数变序数，先把ty形成tie，假如逢上二位数，十位基数，个位序，th末尾加上去.一,二,三变字体；th从4上起；8加h,9减e；用f代ve；ty形成tie.剖析心诀：one→first，two→second，three→third那三个词汇变更特殊，要单独记；eight→e ighth，nine→ninth，八去t，九去e后再加-th；five→fifth，twelve→twelfth，五、十二把ve换成f再加-th；twenty→twentieth，thirty→thirtieth... 整十先把词汇尾y改为ie再加-th.二位数时则十位数用基数词汇，个位数用序数词汇，如：twenty-first.第1 first 1st第2 second 2nd第3 third 3rd第4 fourth 4th第5 fifth 5th第6 sixth 6th第7 seventh 7th第8 eighth 8th第9 ninth 9th第10 tenth 10th第11 eleventh 11th第12 twelfth 12th第13 thirteenth 13th第14 fourteenth 14th第15 fifteenth 15th第16 sixteenth 16th第17 seventeenth17th第18 eighteenth 18th第19 nineteenth 19th第20 twentieth 20th第21 twenty-first21st第22 twenty-second22nd第23 twenty-third23rd第24 twenty-fourth24th第25 twenty-fifth25th第26 twenty-sixth26th第27 twenty-seventh27th第28 twenty-eighth28th第29 twenty-ninth 29th第30 thirtieth 30th第31 thirty-first 31st第32 thirty-second 32nd第33 thirty-third33rd第34 thirty-fourth 34th第35 thirty-fifth 35th第36 thirty-sixth36th第37 thirty-seventh 37th第38 thirty-eighth 38th第39 thirty-ninth 39th第40 fortieth 40th第41 forty-first 41st第42 forty-second 42nd第43 forty-third 43rd第44 forty-fourth44th第45 forty-fifth 45th第46 forty-sixth 46th第47 forty-seventh47th第48 forty-eighth48th第49 forty-ninth49th第50 fiftieth 50th第51 fifty-first 51st第52 fifty-second52nd第53 fifty-third 53rd第54 fifty-fourth54th第55 fifty-fifth 55th第56 fifty-sixth 56th第57 fifty-seventh57th第58 fifty-eighth58th第59 fifty-ninth 59th第60 sixtieth 60th第61 sixty-first 61st第62 sixty-second62nd第63 sixty-third 63rd第64 sixty-fourth64th第65 sixty-fifth 65th第66 sixty-sixth 66th第67 sixty-seventh67th第68 sixty-eighth68th第69 sixty-ninth69th第70 seventieth 70th第71 seventy-first71st第72 seventy-second72nd第73 seventy-third73rd第74 seventy-fourth74th第75 seventy-fifth75th第76 seventy-sixth 76th第77 seventy-seventh 77th第78 seventy-eighth 78th第79 seventy-ninth 79th第80 eightieth 80th第81 eighty-first81st第82 eighty-second 82nd第83 eighty-third 83rd第84 eighty-fourth 84th第85 eighty-fifth 85th第86 eighty-sixth 86th第87 eighty-seventh 87th第88 eighty-eighth 88th第89 eighty-ninth 89th第90 ninetieth 90th第91 ninety-first91st第92 ninety-second 92nd第93 ninety-third93rd第94 ninety-fourth 94th第95 ninety-fifth95th第96 ninety-sixth96th第97 ninety-seventh 97th第98 ninety-eighth 98th第99 ninety-ninth 99th第100 one hundredth 100th。
人教版七年级英语上册基数词序数词介词讲解与练习.doc
棊数词和序数词基数词序数词0 zero1 one first/1st 第一2 two second/2 nd 第二3 three third/3rd 第三4 four fourth/4th 第四5 five fifth/5th 第五6 six sixth/6th 第六7 seven scvcnth/7th 第七8 eight eighth/&h 第八9 nine ninth/9th 第九10 ten tenth/10th 第十11 eleven eleventh/11th 第十一12 twelve twelfth/12th 第十二13 thirteen thirteenth/13 th 第十三14 fourtee n fourteenth/14th 第十四15 fifteen fifteenth/15th 第十五16 sixteen sixteenth/16th 第十六17 seve ntccn seventeenth/17th 第十七18 eighteen eighteenth/18th 第十八19 nin eteen n ineteenth/19th 笫十九20 twenty twentieth/20th 第二十21 Twenty-one twenty-first/21 st 第二计—k22 Twenty-two twenty-second/22nd 第二十二23 Twenty-three twenty-third/23rd 第二十三30 thirty thirtieth/30th 第三十40 forty fortieth/40th 第四十5() fifty fiftieth/5()th 第五十60 sixty sixticth/60th 第六十70 seventy seventieth/70th 第七十80 eighty eightieth/80th 笫八十90 ninety ninetieth/90th 第九十100 hundred hundredth/100th 第一百基数词变序数词变化规贝'J基变序，有规律，词尾一th加上去；1,2, 3,特殊记；词尾字母t,d,d (first, second, third )8 少t, 9 减c； (eight --- eighth nine一ninth) ve 耍用f 替；(five —-fifth twelve---twelfth)见y变成i和e ,再加th 莫忘记；(twenty - twentieth)若要遇到儿十儿，只变个位就可以。
英语基数词变序数词(1-100)
一、序数词第1 fir st 1st第2 seco nd 2nd 第3 thi rd 3rd 第4 four th 4th 第5 fif th 5th第6 six th 6th 第7 seven th 7th 第8 eight h 8th 第9 nin th 9th 第10 ten th 10th第11 eleven th 11th第12 twel fth 12th第13 thirteen th 13th 第14 fourteen th 14th 第15 fifteen th 15th第16 sixteen th 16th 第17 seventeen th 17th 第18 eighteen th 18th 第19 nineteen th 19th 第20 twen tieth 20th 第21 twenty-first 21st第22 twenty-second 22nd第23 twenty-third 23rd 第24 twenty-four th 24th第25 twenty-fif th 25th 第26 twenty-six th 26th 第27 twenty-seven th 27th第28 twenty-eight h 28th第29 twenty-nin th 29th 第30 thir tie th 30th第31 thirty-first 31st 第32 thirty-second第33 thirty-third第34 thirty-fourth第35 thirty-fifth第36 thirty-sixth第37 thirty-seventh第38 thirty-eighth第39 thirty-ninth第40 fortieth第41 forty-first第42 forty-second 第43 forty-third第44 forty-fourth 第45 forty-fifth第46 forty-sixth 第47 forty-seventh 第48 forty-eighth 第49 forty-ninth 第50 fiftieth第51 fifty-first第52 fifty-second 第53 fifty-third第54 fifty-fourth 第55 fifty-fifth第56 fifty-sixth 第57 fifty-seventh 第58 fifty-eighth 第59 fifty-ninth 第60 sixtieth第61 sixty-first第62 sixty-second 第63 sixty-third第64 sixty-fourth第65 sixty-fifth第66 sixty-sixth第67 sixty-seventh 第68 sixty-eighth第69 sixty-ninth第70 seventieth第71 seventy-first第72 seventy-second第73 seventy-third第74 seventy-fourth 第75 seventy-fifth第76 seventy-sixth 第77 seventy-seventh 第78 seventy-eighth 第79 seventy-ninth 第80 eightieth第81 eighty-first第82 eighty-second 第83 eighty-third第84 eighty-fourth 第85 eighty-fifth第86 eighty-sixth 第87 eighty-seventh 第88 eighty-eighth 第89 eighty-ninth 第90 ninetieth第91 ninety-first第92 ninety-second 第93 ninety-third第94 ninety-fourth第95 ninety-fifth第96 ninety-sixth第97 ninety-seventh第98 ninety-eighth第99 ninety-ninth第100 one hundred th 第101 one hundred first二、基数词：1 one2 two3 three4 four5 five6 six7 seven8 eight9 nin e10 ten11 eleven12 twel ve13 thirteen14 fourteen15 fifteen16 sixteen17 seventeen18 eighteen19 nineteen20 twen ty21 twenty-one22 twenty-two23 twenty-three24 twenty-four25 twenty-five26 twenty-six27 twenty-seven28 twenty-eight29 twenty-nine30 thir ty31 thirty-one32 thirty-two33 thirty-three34 thirty-four35 thirty-five36 thirty-six37 thirty-seven38 thirty-eight39 thirty-nine40 forty41 forty-one42 forty-two43 forty-three44 forty-four45 forty-five46 forty-six47 forty-seven48 forty-eight49 forty-nine50 fifty51 fifty-one52 fifty-two53 fifty-three54 fifty-four55 fifty-five56 fifty-six57 fifty-seven58 fifty-eight59 fifty-nine60 sixty61 sixty-one62 sixty-two63 sixty-three64 sixty-four65 sixty-five66 sixty-six67 sixty-seven68 sixty-eight69 sixty-nine70 seventy71 seventy-one72 seventy-two73 seventy-three74 seventy-four75 seventy-five76 seventy-six77 seventy-seven78 seventy-eight79 seventy-nine80 eighty81 eighty-one82 eighty-two83 eighty-three84 eighty-four85 eighty-five86 eighty-six87 eighty-seven88 eighty-eight89 eighty-nine90 ninety91 ninety-one92 ninety-two93 ninety-three94 ninety-four95 ninety-five96 ninety-six97 ninety-seven98 ninety-eight99 ninety-nine 100 one hundred。
七年级英语上册unit 8 序数词
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
Grammar： 名词所有格形式-表示有生命的名词与后面名词的所有关系。
（名词+’s ）
1）单数名词后直接加’s 如：Jim's coat 吉姆的外套 Jeff's mother 杰夫的妈妈 2）以s结尾的复数名词，只加“’” 如：Teachers' Day 教师节 the twins’ books 双胞胎的书 3）不以s结尾的不规则的名词复数，加“’s” 如：Children's Day 儿童节 men's shoes 男式鞋
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fifthpagepagefive基数词onetwothreefourfivesixseveneightnineten序数词firstsecondthirdfourthfifthsixthseventheighthninthtenth基数词eleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteen序数词eleventhtwelfththirteenthfourteenthfifteenthsixteenthseventeentheighteenthnineteenth序数词twentyfirsttwentysecondtwentythirdtwentyfourththirtyfirstonehundredfirst基数词twentyonetwentytwotwentythreetwentyfourthirtyoneonehundredone序数词twentieththirtiethfortiethfiftiethninetiethhundredth基数词twentythirtyfortyfiftyninetyhundred基数词变序数词序有规律加上th莫迟疑
人教版七年级英语上册基数词序数词介词讲解与练习
基数词和序数词基数词和序数词基数词 序数词序数词 0 zero 1 one first/1st 第一第一2 two second/2nd 第二第二3 three third/3rd 第三第三4 four fourth/4th 第四第四5 five fifth/5th 第五第五6 six sixth/6th 第六第六 7 seven seventh/7th 第七第七8 eight eighth/8th 第八第八9 nine ninth/9th 第九第九10 ten tenth/10th 第十第十11 eleven eleventh/11th 第十一第十一12 twelve twelfth/12th 第十二第十二13 thirteen thirteenth/13th 第十三第十三14 fourteen fourteenth/14th 第十四第十四15 fifteen fifteenth/15th 第十五第十五16 sixteen sixteenth/16th 第十六第十六17 seventeen seventeenth/17th seventeenth/17th 第十七第十七18 eighteen eighteenth/18th 第十八第十八19 nineteen nineteenth/19th 第十九第十九20 twenty twentieth/20th 第二十第二十21 Twenty-one twenty-first/21st 第二十一第二十一22 Twenty-two twenty-second/22nd 第二十二第二十二23 Twenty-three twenty-third/23rd 第二十三第二十三30 thirty thirtieth/30th 第三十第三十40 forty fortieth/40th 第四十第四十50 fifty fiftieth/50th 第五十第五十60 sixty sixtieth/60th 第六十第六十70 seventy seventieth/70th 第七十第七十80 eighty eightieth/80th 第八十第八十90 ninety ninetieth/90th 第九十第九十100 hundred hundredth/100th 第一百第一百基数词变序数词变化规则基数词变序数词变化规则基变序，有规律，基变序，有规律，词尾—th 加上去；加上去；1，2，3，特殊记；，特殊记；词尾字母t,d,d (first, second, third ) 8少t, 9减e ；（eight --- eighth nine nine——ninth ） ve 要用f 替；（five ---fifth twelve--- twelfth ）见y 变成变成 i 和e ，再加再加 th 莫忘记；（twenty -- twentieth ）若要遇到几十几，若要遇到几十几，只变个位就可以。
英语基数词变序数词(1-100)
一、序数词第1 fir st 1st第2 seco nd 2nd 第3 third 3rd 第4 fourth 4th 第5 fif th 5th第6 sixth 6th 第7 seven th 7th 第8 eighth 8th 第9 ninth 9th 第10 ten th 10th第11 eleven th 11th第12 twelfth 12th第13 thirteenth 13th 第14 fourteen th 14th 第15 fifteenth 15th第16 sixteen th 16th 第17 seventeen th 17th 第18 eighteen th 18th 第19 nineteen th 19th 第20 twentieth 20th 第21 twenty-first 21st第22 twenty-second 22nd第23 twenty-third 23rd 第24 twenty-four th 24th第25 twenty-fif th 25th 第26 twenty-sixth 26th 第27 twenty-seven th 27th第28 twenty-eighth 28th第29 twenty-ninth 29th 第30 thirtieth 30th第31 thirty-first 31st第32 thirty-second第33 thirty-third第34 thirty-fourth第35 thirty-fifth第36 thirty-sixth第37 thirty-seventh第38 thirty-eighth第39 thirty-ninth第40 fortieth第41 forty-first第42 forty-second 第43 forty-third第44 forty-fourth 第45 forty-fifth第46 forty-sixth第47 forty-seventh 第48 forty-eighth 第49 forty-ninth第50 fiftieth第51 fifty-first第52 fifty-second 第53 fifty-third第54 fifty-fourth 第55 fifty-fifth第56 fifty-sixth第57 fifty-seventh 第58 fifty-eighth 第59 fifty-ninth第60 sixtieth第61 sixty-first第62 sixty-second第63 sixty-third第64 sixty-fourth第65 sixty-fifth第66 sixty-sixth第67 sixty-seventh 第68 sixty-eighth第69 sixty-ninth第70 seventieth第71 seventy-first第72 seventy-second第73 seventy-third第74 seventy-fourth 第75 seventy-fifth第76 seventy-sixth第77 seventy-seventh 第78 seventy-eighth 第79 seventy-ninth第80 eightieth第81 eighty-first第82 eighty-second 第83 eighty-third第84 eighty-fourth 第85 eighty-fifth第86 eighty-sixth第87 eighty-seventh 第88 eighty-eighth 第89 eighty-ninth第90 ninetieth第91 ninety-first第92 ninety-second 第93 ninety-third第94 ninety-fourth第95 ninety-fifth第96 ninety-sixth第97 ninety-seventh 第98 ninety-eighth第99 ninety-ninth第100 one hundred th第101 one hundred f irst二、基数词：1 one2 two3 three4 four5 five6 six7 seven8 eight9 nine10 ten11 eleven12 twelve13 thirteen14 fourteen15 fifteen16 sixteen17 seventeen18 eighteen19 nineteen20 twenty21 twenty-one22 twenty-two23 twenty-three24 twenty-four25 twenty-five26 twenty-six27 twenty-seven28 twenty-eight29 twenty-nine30 thirty31 thirty-one32 thirty-two33 thirty-three34 thirty-four35 thirty-five36 thirty-six37 thirty-seven38 thirty-eight39 thirty-nine40 forty41 forty-one42 forty-two43 forty-three44 forty-four45 forty-five46 forty-six47 forty-seven48 forty-eight49 forty-nine50 fifty51 fifty-one52 fifty-two53 fifty-three54 fifty-four55 fifty-five56 fifty-six57 fifty-seven58 fifty-eight59 fifty-nine60 sixty61 sixty-one62 sixty-two63 sixty-three64 sixty-four65 sixty-five66 sixty-six67 sixty-seven68 sixty-eight69 sixty-nine70 seventy71 seventy-one72 seventy-two73 seventy-three74 seventy-four75 seventy-five76 seventy-six77 seventy-seven78 seventy-eight79 seventy-nine80 eighty81 eighty-one82 eighty-two83 eighty-three84 eighty-four85 eighty-five86 eighty-six87 eighty-seven88 eighty-eight89 eighty-nine90 ninety91 ninety-one92 ninety-two93 ninety-three94 ninety-four95 ninety-five96 ninety-six97 ninety-seven98 ninety-eight99 ninety-nine 100 one hundred。
1-100基数词变序数词
1、第一类first (1st) 第一second (2nd) 第二third (3rd) 第三（在括号里的是缩写形式，均在阿拉伯数字后面加上相应序数词的最后两个字母构成，以下各类与此相同。
）这类序数词只有三个，在整个序数词里面是特殊的，就和第一类基数词一样，需要逐个地硬记下来2、第二类：fourth (4th) 第四fifth (5th) 第五sixth (6th) 第六seventh (7th) 第七eighth (8th) 第八ninth (9th) 第九tenth (10th) 第十eleventh (11th) 第十一twelfth (12th) 第十二thirteenth (13th) 第十三fourteenth (14th) 第十四fifteenth (15th) 第十五sixteenth (16th) 第十六seventeenth (17th) 第十七eighteenth (18th) 第十八nineteenth (19th) 第十九hundredth（100th）第一百这一类序数词共有十七个。
均在相应的基数词后面加上后缀－th构成。
要注意其中fifth、eighth、ninth、twelfth四个词的拼法3、第三类：twentieth (20th) 第二十thirtieth (30th) 第三十fortieth (40th) 第四十fiftieth (50th) 第五十sixtieth (60th) 第六十seventieth (70th) 第七十eightieth (80th) 第八十ninetieth (90th) 第九十这一类全是十位整数的序数词，共八个。
它们的构成方法是：先将相应的十位整数的基数词词尾－ty 中的y改成i，然后在加上后缀－eth4、第四类：thirty-first (31st) 第三十一sixty-second (62nd) 第六十二eighty-seventh (87th) 第八十七ninety-eighth (98th) 第九十八这类表示“第几十几”的序数词，跟表示“几十几”的基数词一样简单。
基数词变序数词有口诀
基数词变序数词有⼝诀基数词变序数词有⼝诀：英语中基数词变为序数词时，⼀般在基数词后加词尾-th，但有⼏个词变化特殊，只要记住下⾯这个⼝诀，这些问题即可迎刃⽽解。
⼀、⼆、三，单独记；⼋去t，九除e，ve要⽤f替，整⼗基数变序数，先把ty变成tie；要是遇到两位数，⼗位基数个位序，th最后加上去。
解析⼝诀：one→first，two→second，three→third这三个词变化特殊，要单独记；eight→eighth，nine→ninth，⼋去t，九去e 后再加-th；five→fifth，tw elve→twelfth，五、⼗⼆把ve换成f再加-th；twenty→twentieth，thirty→thirtieth... 整⼗先把词尾y改为ie再加-th。
两位数时则⼗位数⽤基数词，个位数⽤序数词，如：twenty-first。
⼀、英语的词类句⼦要由词组成，英语词类有⼗种：句中成分⽤实词，名、代、动、副、数、形容；冠、介、连词和感叹，虚词附加或沟通。
词类功能掌握了，造句之时好运⽤。
⼆、语序歌主、谓、宾、表同汉语，定语有同也有异。
状语位置最特殊，不能全和汉语⽐。
三、肯定句变⼀般疑问句have和be提句⾸，其它助词⽐开头。
时间、⼈称由do变，动词只把原形留。
谓语助词有⼏个，第⼀助词提句⾸。
四、肯定旬变否定句否定谓语加not，放在be和have后。
其它要加助词do，do的后边加not，谓语若是助词多，not紧跟第⼀个。
五、名词的所有格名词只变数，不分主宾格。
⼈和动物类，可变所有格。
撇(’)后加s，相当汉语“的”。
时间、距离等，也变所有格。
六、名词变复数单数变为复数式，加上“s”统⾔之。
下列结尾名词后，要加“s”先加“e”：发⾳[F][tF][s]和[z]，或是辅⾳加“o”时。
有些名词变复数，词尾变化要注意：“y”前字母是辅⾳，⼀律变“y”为“ie”；遇到“f／fe”，有时需要变“ve”。
少数名词不规则，特别情况靠硬记。