界说:望文生义?
基数词:?
基数词 20-90 是在个位数词后边加 -ty 构成。其间 twenty, thirty, forty, fifty, eighty 改变不规则。
基数词 21-99 是在十位数词后边加上个位数词组成,中心加上连字符 。
例如: 21 twenty-one,95 ninety-five
? ? ? ? ? ? 英语中没有万,十万,千万,亿这样的单位数词,ten thousand 十千,十千(1000×10)=一万。故用阿拉伯数字书写千以上的数目时,要由右向左每三位数间留一个空格或写一个逗号。第一个前为thousand;第二个前为million;第三个前为thousand million(英)或billion(美)。每两个空格间或两个逗号间的三位数都被看作“十位数或百位数的千”或“十位数或百位数的百万”。例如56 000 fifty-six thousand和600,000,000 six hundred million。
基数词一般都是奇数 但有时特别情况
(1) 标明几十几 ,迷糊的
he wrote novel in his forties.变y为i加es
(2) 标明几十年代?
in the 1960s?
年代用年份的阿拉伯数字加-’s或-s标明。如:
十七世纪二十年代写作1620’s或1620s。
前期、中期、晚期别离用early,mid-和late标明。如:
三十年代前期写作the early thirties。
三十年代中期写作the mid-thirties。
三十年代晚期写作the late thirties。
二十世纪五十年代前期写作the early 1950’s;
中期写作the mid-1950’s;
晚期写作the late 1950’s
(3)标明不断定的数?
hundred、 thousand、mill lion ; billion?? ? 用在不断定的数加s,与of连用
(2)dozen,score,hundred,thousand,million等数词前面有基数词或某些标明数量的描述词时,不加-s。
位于another,all之后
如:can you have another two cakes? 你还能吃2块蛋糕吗? the boy lost all the five pencils last week.这孩子上星期把5枝铅笔全丢了。
位于such和more之前
如:i can finish reading two such books in two days.两天里我能读完这样的两本书。please give me one more apple to eat.请再给我一个苹果吃。
可置于last,next,other之前或之后
如:his last two books are written in english.他的后两本书是用英语写的
基数词的用法(1) 作定语。如:
there are only three boys in the class.?班上只需3名男生。
ten people?will come to?the party. 十自个要来参加集会。
(2) 作主语。如:
it is said that thirteen is an unlucky number. 传闻13是个不吉利的数字。
three of them will play football. 他们中有三人要去踢足球。
(3) 作宾语。如:
it is worth three hundred. 这件东西值300。
the city has a population of three million. 这个城市有三百万人员。
(4) 作表语。如:
i am eighteen. 我18岁。
two and two is four. 二加二等于四。
(5) 作同位语。如:
are you two coming? 你们俩来吗?
they ten will go abroad. 他们十自个将出国。
基数词固定短语用复数
everything is at sixes and sevens in the house.
they came by twos and threes.
???????????????????????????????????????????? ? 序数词序数词标明摆放的次序
序数词的缩写方法为阿拉伯数字加序数词的最终两个字母.如: first—1st;second—2nd; third-3rd;
thirty-first—31st
一,二,三要全变;(one-first; two-second;three- third)
其他都加th, th里有破例,8去t,(eight-eighth) 9去e(nine-ninth)
字母f代ve(five-fifth; twelve-twelfth);ty变成tie(twenty-twentieth)
若要改变几十几,只变个位就可以(twenty-one-twenty-first)
?
序数词标明法
he cast the net a second tme.?
如:
well have to do it again. 咱们得重做一次。
shall i ask him a third time? 还要再问他一次吗?
when nash sat down, a fourth man rose to speak.
纳什坐下后,第四自个又起来讲话。
(2) 序数词的首要作用
作主语。如:
the first day of may is international labour day.五月一日是世界劳作节。
作表语。作表语时,序数词前的定冠词一般省去。如:
lynd was second last year. 林德去 年是第二。
作宾语。如:
he was among the first to arrive. 他是第一批抵达的人员之一。
作定语。如:
may is the fifth month of the year. 五月是一年中的第五个月。
作同位语。如:
who is the woman, the second in the second line? 在第二列第二个的那个妇女是谁?
但要留心:在许多情况下,咱们可以用基数词替代序数词来标明次序。如:
the second part = part two (第二有些)
the first chapter = chapter one (第一章)
the fourth section = section four (第四节)
年月日标明法标明月、日既可以先写“日”再写“月”(英式),也可先写“月”再写“日”(美式)。如:
9月1日写作september 1,读作september the first;或1 september,读作the first of
september。
? ? ? ? ? 标明“年”和“月”时,在“年”和“月”前用介词in;标明具体日期时,在“日”前用介词on. 如:
in 2003:在2003年
in july:在七月
on june 24, 1998:在1998年6月24日
月份英语单词
“月份的英语单词:january,february,march,april,may,june,july,august,september,october,november,december。”
一月january
二月february
三月march
四月april
五月may
六月june
七月july
8月august
九月september
十月octorber
十一月november
十二月december
十二小时计时法一般选用“小时数: 分钟数” 或“小时数. 分钟数”的方法,如:8:12或8.12。为了避免误解,一般加上in the morning / a.m.(上午)或in the afternoon p.m.(下午)以示差异。a.m.是拉丁语ante meridiem的缩写方法,读作/clock,也可不加。如:
8.00 a.m./8:00 a.m. 上午8点
读作:eight a.m. 或 eight in the morning.
8.45 a.m./8:45 a.m. 上午8点四十五
读作:eight forty-five a.m. 或 a quarter to nine in the morning.
2.00 p.m./2:00 p.m. 下午两点
读作:two(oclock) in the afternoon.
3.30 p.m./3:30 p.m. 下午三点半
读作:three thirty p/m. 或 half past three in the afternoon
5.15 p.m./5:15 p.m. 下午五点一刻
读作:five fifteen p.m. 或 a quarter past five in the afternoon.
8.55 p.m./8:55 p.m. 晚上8点五十五
读作:eight fifty-five at night 或 five to nine at night (at night指日落后到深夜零时。)?[1]?
(3)、时刻的标明:
首要看分钟的巨细:
1、大于30分钟时,需要将小时加1,再用60减去分钟数后用to联接。
2、小于或等于30分钟时,直接在小时和分钟间加上past就可以了。
分数表达
1/3 one-third 2/3 two-thirds 3/5 three-fifths
(2) 较凌乱分数的简明读写办法。如
22/9 twenty-two over nine
a/b a over b 或 a divided by b 43/97 forty-three over ninety-seven
(3) 整数与分数之间须用and联接。如:
four and a half nine and two fifths
(4) 分数用作前置定语时,分母要用奇数方法。留心下列写法与读法。如:
a one-third mile 1/3英里 a three-quarter majority 3/4的大都
百分数中的百分号%读作percent。如:
6%读作:six percent
0.6%读作:(nought)point six percent
500%读作:five hundred percent
12.34%读作:twelve point three four percent
英语的星期
sunday 周日、星期天,monday 星期一,tuesday 星期二,wednesday 星期三,thursday 周四,friday 星期五,saturday 星期六
不定数意图标明法大约标明
(1) about, approximately, around, more or less, roughly, some等词 数词,或数词 more or less, or so, or?thereabouts等词。如:
about / some 1,000 books
2,000 seats more or less
approximately 86 miles
sixty or so pages / sixty pages or so / sixty pages or thereabouts
somewhere也可标明“大约”,如somewhere about 300 people。
(2) 基数词或阿拉伯数字结束 -ish。如:
i’ll come (at) tenish tomorrow morning. (十点支配)
she is 40ish. (四十岁支配)
(3) 十位数 -s。如:
he is in his teens.
she is in her forties.?[1]?
多于标明
(1) above, more than, over等 数词。如:
above 90 yuan
students over 45
(2) 数词 odd。如:
20-odd chairs
3.“
少于……”、“不到……”标明法
almost, below, less than, under等 数词。如:
almost ten years old
less than a minute
under two hours?
数词的品种数词有基序数和序数词两类。基数词标明数量的巨细,如one, two, three, four等。序数词标明序数,如first, second, third, fourth等。数词与不定代词、冠词、指示代词、描述词性物主代词等被称作限制词。
基数变序数(1)第1至第19一般是在基数词后加th,但改变特别的有one—first, two—second, three—third, eight—eighth, nine—ninth, five—fifth, twelve—twelfth。
(2)逢十的twenty, thirty…ninety,别离改y为ieth。如twenty—twentieth, ninety—ninetieth。
(3)标明第几十几或第几百几十几,只需将个位数改为序数词。如56—fifty-six—fifty-sixth,635—six hundred and thirty-five—six hundred and thirty-fifth
基数词读写(1)三位数的读写法:个位与十位之间用连字符“-”;百位与十位之间加and;十位为零时也要加and。如:
365读作three hundred and six-five
605读作six hundred and five
(2)大于三位数的读写法:从个位起每三位打一个撇号“’”,第一个撇号读thousand,第二个撇号读million,各撇号之间的数按三位及三位以下的数的读法读。如:
23, 589读作twenty-three thousand five hundred and eighty-nine
6, 632, 900读作six million six
hundred and thirty-two thousand nine hundred
28, 000, 000读作twenty-eight million
下列4种情况不必冠词。
1. 序数词前已有物主代词或名词一切格时,不能再用冠词。如:
this is tom’s second visit to china.这是汤姆第次造访我国。
2. 标明竞赛或考试的名词时,一般省掉定冠词。如:
he was (the) second in the english exam.在这次英语考试中他得了第二名。
3. 序数词被用作副词时不必冠词。
i have to finish my homework first.我得先把作业结束好。
4. 在某些习语中不必冠词。如at first起先, first of all首要, at first sight乍一看。
年纪表达法