基数词序数词的用法 今天十月十五日,是他十三岁的生日 Today is October____,his___ birth

fifty-one fifty-first 51stfifty-two fifty-second 52ndfifty-three fifty-third 53rdfifty-four fifty-fourth 54thfifty-five fifty-fifth 55thfifty-six fifty-sixth 56thfifty-seven fifty-seventh...

英语中部分单词变化的规律
原粉平
英语形容词比较级,最高级的结尾变化
英语形容词比较级的构成
英语形容词比较等级有三个：原级,比较级和最高级.
形容词比较等级形式变化有规则的和不规则的两种.
规则变化
1）单音节词末尾加-er（比较级）,-est（最高级）
【例】 原级 比较级 最高级
great greater greatest
small smaller smallest
clean cleaner cleanest
2）单音节如以e结尾,只加-r（比较级）,-st（最高级）
【例】 fine finer finest
nice nicer nicest
wide wider widest
3）闭音节单音节词如末尾只有一个辅音字母,须先双写这个辅音字母,再加-er（比较级）,-est（最高级）
辅音字母＋元音字母＋辅音字母 要双写最后一个辅音字母.
【例】 big bigger biggest
hot hotter hottest
red redder reddest
4）少数以-y,-er,ow,-ble结尾的双音节词,末尾加-er（比较级）,-est（最高级）.以-y结尾的词,如-y前是辅音字母,则变y为-i,再加-er和-est.以-e结尾的词只加-r和-st.
【例】 clever cleverer cleverest
narrow narrower narrowest
able abler ablest
easy easier easiest
5）其它双音节和多音节词皆在前面加单词more和most.
【例】 careful more careful most careful
difficult more difficult most difficult
delicious more delicious most delicious
不规则变化
原级 比较级 最高级
good/well better best
bad worse worst
many/much more most
little less least
far farther/further farthest/furthest
注：有些形容词一般没有比较等级.如：right,wrong,woolen等.
学习英语基数词变序数词的口诀
英语有许多窍门可寻,下面侃侃基数词变序数词的一点方法：
1、2、3要牢记,8去t,9去e,ve要用f替,
若是以y来结尾,变为ie别客气,最后加上th.
first scond third fourth fifth sixth seventh eighth ninth tenth
eleventh twelfth thirteenth .twentieth twenty-first .thirtieth...
不规则动词过去式和过去分词巧记方法
动词的过去式和过去分词是初中英语教学中的重点,而有些动词的不规则变化是这些重点中的难点,但这些不规则变化也不是毫无规律可循的.现将初中英语中一些常用的不规则动词变化介绍如下.
一、原形、过去式和过去分词的词形和读音都相同的单词,结尾字母一般是t或d.如：　　cut-cut-cut,hit-hit-hit,put-put-put,cost-cost-cost,let-let-let,shut-shut-shut,set-set-set,hurt-hurt-hurt,spread-spread-spread 　　特殊：动词read的过去式和过去分词虽然词形与原形一致,read-read-read,但发音分别是[ri:d]-[red]-[red].
二、有些动词的过去分词与原形是一样的.如：come-came-come,become-became-become,run-ran-run,overcome-overcame-overcome
三、有些动词的过去式和过去分词相同.
1.把单词结尾的字母d改为t.如：lend-lent-lent,spend-spent-spent,send-sent-sent
2.改变单词中间元音字母.如：sit-sat-sat,win-won-won,shine-shone-shone,hold-held-held
3.以eep结尾的动词,把eep改为ept.如：keep-kept-kept,sleep-slept-slept,sweep-swept-swept
4.过去式和过去分词都以augh或ough结尾的动词.如：buy-bought-bought,fight-fought-fought,think-thought-thought,bring-brought-brought,teach-taught-taught,catch-caught-caught
5.有的以ay结尾的动词,在过去式和过去分词中把ay变成aid.如：say-said-said,lay-laid-laid,pay-paid-paid
6.另有一些其它形式的变化.如：have-had-had,learn-learnt-learnt,leave-left-left,lose-lost-lost,make-made-made,meet-met-met,feel-felt-felt
四、有些动词原形中含有字母i,在过去式中变i为a,在过去分词中变i为u.
五、以字母ow或aw结尾的动词,在变成过去式时,通常把元音字母变成e,在变成过去分词时,通常只在词尾加n.如：　blow- blew- blown,draw-drew-drawn,grow-grew-grown,throw-threw-thrown,know-knew-known
六、有些动词的过去分词是在原形词尾加n或en,变成以en结尾的单词.如：rise-rose-risen,give-gave-given,take-took-taken,fall-fell-fallen,drive-drove-driven,eat-ate-eaten 特殊：write-wrote-written,speak-spoke-spoken,ride-rode-ridden,get-got-gotten

阿拉伯语的基数词有阴阳两种形式,1,2和被数名词同性,即:如果名词为阳性名词,则数词也用阳性;etc.3-10与被数名词反阴阳.即:如果名词为阳性名词,则数词要用阴性.序数词用法是:和被修饰词完全同性.对于时间,用序数词来...

数词
基数词
واحد واحدة
اثنان اثنتان
ثلاث ثلاثة
أربع أربعة
خمس
خمسة
ستّ
ستّة
سبع
سبعة
ثمانٍ ثمانية
تسع تسعة
عشر
عشرة
أحدَ عشَرَ إحدَي عشْرَةَ
اثنا عشرَ اثنتاعشْرةَ
اثنَيْ عشَرَ اثنتَيْ عشْرةَ
ثلاثَ عشرة ثلاثةَ عشر
أربع عشرة أربعة عشر
خمس عشرة خمسة عشر
ستّ عشرة ستّة عشر
سبع عشرة ستعة عشر
ثمانِيَ عشرة ثمانية عشر
تسع عشرة تسعة عشر
عِشْرونَ عشرين
ثلاثون ثلاثين
أربعون أربعين
خمسون خمسين
ستّون ستّين
سبعون سبعين
ثمانون ثمانين
تسعون تسعين
ثمانٍ و أربعون ثمانيةٌ و أربعون
ثمانيًا و أربعين ثما نيةً و أربين
ثمانٍ و أربعين ثمابيةٍ و أربعين
واحد و خمسون واحدة و خمسون
واحدٍ و خمسين واحدةٍ و خمسين
اثنان و عشرون اثنتان وعشرون
اثنين و عشرين اثنتين و عشرين
使用规则
一二照平常,三至十反阴阳（通用所有个位数一二）
一二做定语,置于后,性与被修饰名词一致（只用于一,二）
三至十与被修饰名词复数构成正偏组合,与其单数性相反
十一与被修饰名词性一致,名词处于单数泛指宾格状态
十二与被修饰名词性一致,名词处于单数泛指宾格状态,且本身有宾格属格变化形式
十三到二十之后,本身反阴阳,个位数词与被修饰词性相反,单开口定尾,名词单泛宾
二十之后,其数个位双合口处于主格,与十位数用و连接,名词单
泛宾

基数词作定语,个位数与被修饰语的单数反阴阳,（除一二）,词首加冠词,表确指.
قد
اشترك هؤلاء الطّلاّب الأربعة في مسابقة القراءة.
إن
اللّغة العربية و الاجليزيّة و الفرنسيّة والصّينيّة والعربيّة والأسبانيّة
والرّوسيّة هي لغات العمل الستّ في الأمم المتّحدة.

序数词
الأّوَّلُ الأولي
الثّاني
الثّالِثُ
الرّابِعُ
الخامِسُ
السّادِسُ
السّابِعُ
الثّامِنُ
التّاسِعُ
العَاشِرُ
الحادِيَ عَشَرَ
الثَّانِيَ عَشَرَ
الثّالثَ عشر
الرّابعَ عشر
الخامسَ عشر
السّادسَ عشر
السّابعَ عشر
الثّامنَ عشر
التّاسعَ عشر
العشرونَ
الحادِي والعشرونَ
الثّانِي والعشرون
الثّالث والعشرون
الرّابعُ والعشرون
修饰词与被修饰词关系,性数格指一致
表示时间日期月份
كم
الساعة الآن؟
الساعة
الآن الساعة السادسة.
الّساعة
العاشرة والنصف.
الّساعة
الحاديةَ عشرة والربع.
السّاعة
الثّانية و الثلث.
الّساعة
الثامنة عشرة الاّ الربعَ

ما
اليوم في الأسبوع؟
اليوم
يوم ... 星期
يوم
السبت
يوم
الأحد
يوم
الاثنين
يوم
الثلاثاء
يوم
الأربعاء
يوم
الخميس
يوم
الجمعة
يومُ
الجمعة القادمُ

ما
اليوم من الشهر؟
اليوم
الخامس من أكتوبر.

基数词就是阿拉伯数字
序数词就是第一，第二…

1.______ martyrs have heroically laid down their lives for the people.
a.Thousand upon thousand of b.Thousand and thousands of
c.Thousands upon thousands of d.Thousand and thousand of
2.They received ______ of letters about their TV programs.
a.dozen b.dozen and dozen c score d.dozens
3.Who is that man,______ in the front row?
a.one b.the one c.first d.the first
4.We have produced ______ this year as we did in 1993.
a.as much cotton twice b.as twice much cotton
c.much as twice cotton d.twice as much cotton
5.The earth is about ______ as the moon.
a.as fifty time big b.fifty times as big c.as big fifty time d.fifty as times big
6.The population of many Alaskan cities has ______ in the past three years.
a.more than doubled b.more doubled than c.much than doubled d.much doubled than
7.The moon is about _____ in diameter as diameter as the earth.
a.one-three as large b.one three as large c.one-third as large d.one third as large
8.Five hundred yuan a month _____ enough to live on.
a.is b.are c.is being d.has been
9.______ of the buildings were ruined.
a.Three fourth b.Three four c.Three-fourths d.Three-four
10.Consult _____ for questions about earthquakes.
a.the six index b.index six c.sixth index d.index numbering six
11.She went to the countryside ______.
a.in the morning at nine/on June first,1968 b.on June first,1968/in the morning at nine
b.at nine in the morning/on June first,1968 d.on June first,1968/at nine in the morning
12.Three-fourths of the surface of the earth ______ covered with water.
a.are b.is c.were d.be
13.This month the production of stainless steel in our steelworks has increased ______ 2,000 tons.
a.with b.in c.on d.by
14.With the miniaturization of the structural components the weight of these electric devices has decreased ________ 30 percent.
a.as b.with c.in d.by
15.The Olympic Games are held ______.
a.every four years b.every four year c.every fourth years d.every four-years
16.As he is not in good health,he goes to his factory only ______ just to learn something about the progress of experiment.
a.once a week b.one week c.one time a week d.one a week
17.Three students ______ in this university come from the South.
a.of ten b.out of in ten c.out of ten d.in tens
18.Strings of the same thickness made of nylon are ______.
a.five times stronger than those b.five time stronger than those
b.five times strong than those d.five times stronger as those
19.the wheels of the old wagon are nearly ______ those of a modern car.
a.twice the size of b.twice size of c.twice sizes of d.twice the size of
20.One day on the moon is ______.
a.two Earth week long b.two Earth weeks long
b.two Earth weeks longer d.two Earth weeks length