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五 數(shù)詞:基數(shù)詞,序數(shù)詞
一、基數(shù)詞
(1)1-20
one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen,
sixteen,seventeen,eighteen,nineteen,twenty
(2)21-99 先說“幾十”,再說“幾”,中間加連字符。
23→twenty-three,34→thirty-four,45→forty—five,56→fifty-six,67→sixty-seven,78→seventy-eight,89→
eighty-nine,91→ninety-one
(3)101—999先說“幾百”,再加and,再加末兩位數(shù)或末位數(shù);
586→five hundred and eighty-six,803→eight hundred and three
(4)l,000以上,先從右往左數(shù),每三位數(shù)加一個“,”,先進(jìn)個“,”前為thousand.第二個“,”前為million,第三個“
,”前為billion
1,001→one thousand and one
18,423→eighteen thousand,four hundred and twenty-three
6,260,309→six million two hundred and sixty thousand three hundred and nine750,000,000,000→seven hundred and fifty billion
二、序數(shù)詞
(1)一般在基數(shù)詞后加th
eg.four→fourth,thirteen→thirteenth
(2)不規(guī)則變化
one→first,two→second,three→third,five→fifth,eight→eighth,nine→ninth,twelve—twelfth
(3)以y結(jié)尾的十位整數(shù),變y為ie再加th
twenty→twentieth, forty→fortieth, ninety→ninetieth
(4)從二十一后的“幾十幾”直至“幾百幾十幾”或“幾千幾百幾十幾”只將個位的基數(shù)詞變?yōu)樾驍?shù)詞。
twenty-first,two hundred and forty-fifth
基數(shù)詞轉(zhuǎn)為序數(shù)詞的口訣:
基變序,有規(guī)律,詞尾加上-th.
一,二,三,特殊記,詞尾字母t,d,d.
八去t,九去e, ve要用f替。
ty將y變成i,th前面有個e.
若是碰到幾十幾,前用基來后用序。
六、介詞:常用介詞:in, on, at, behind等
1.at表示時間概念的某一個點。(在某時刻、時間、階段等)。
at 1:00(dawn,midnight,noon)在一點鐘(黎明、午夜、中午)
2.on
1)表示具體日期。
注:(1)關(guān)于"在周末"的幾種表示法:
at(on)the weekend在周末---特指
at(on)weekends在周末---泛指
over the weekend在整個周末
during the weekend在周末期間
(2)在圣誕節(jié),應(yīng)說at Christmas?而不說on Christmas?2)在(剛……)的時候。
On reaching the city he called up his parents.
一到城里他就給父母打了一個電話。
3.in
1)表示"時段"、"時期",在多數(shù)情況下可以和during互換,前者強調(diào)對比,后者強調(diào)持續(xù)。 in(during)1988(December,
the 20th century)在一九八八年(十二月、二十世紀(jì))
七、動詞:動詞的四種時態(tài):
(1)一般現(xiàn)在時:
一般現(xiàn)在時的構(gòu)成
1. be動詞:主語+be(am, is, are)+其它。如: I am a boy. 我是一個男孩。
2. 行為動詞:主語+行為動詞(+其它)。 如: We study English. 我們學(xué)習(xí)英語。
當(dāng)主語為第三人稱單數(shù)(he, she, it)時,要在動詞后加"-s"或"-es"。如:Mary likes Chinese.瑪麗喜歡漢語。
動詞+s的變化規(guī)則
1.一般情況下,直接加-s,如:cook-cooks, milk-milks
2.以s. x. sh. ch. o結(jié)尾,加-es,如:guess-guesses, wash-washes, watch-watches, go-goes
3.以“輔音字母+y”結(jié)尾,變y為i, 再加-es,如:study-studies
(2)一般過去時:
動詞過去式詳解 動詞的過去式的構(gòu)成規(guī)則有:
A、規(guī)則動詞
① 一般直接在動詞的后面加ed:如 worked , learned , cleaned , visited
、凇∫詄結(jié)尾的動詞直接加d:如 lived , danced , used
、 以輔音字母加y結(jié)尾的動詞要改y為i再加ed(此類動詞較少)如 study – studied carry – carried worry –
worried (注意play、stay不是輔音字母加y,所以不屬于此類)
、 雙寫較后一個字母(此類動詞較少)如 stopped
B、不規(guī)則動詞(此類詞并無規(guī)則,須熟記)小學(xué)階段要記住以下動詞的原形和過去式:sing – sang , eat – ate ,
see – saw , have – had , do – did , go – went , take – took , buy – bought , get – got , read – read
,fly – flew , am/is – was ,
are – were , say – said , leave – left , swim – swam , tell – told , draw – drew , come – came , lose
– lost , find – found , drink – drank , hurt – hurt , feel – felt
(3)一般將來時:
基本結(jié)構(gòu): ①be going to + do;
②will+ do. be going to = will
I am going to go swimming tomorrow(明天). = I will go swimming tomorrow.
(4)現(xiàn)在進(jìn)行時: am,is,are+動詞現(xiàn)在分詞
動詞現(xiàn)在分詞詳解 動詞的ing形式的構(gòu)成規(guī)則:
、 一般的直接在后面加上ing , 如doing , going , working , singing , eating
、 以e 結(jié)尾的動詞,要先去e再加ing ,如having , writing
、 雙寫較后一個字母的(此類動詞極少)有:running , swimming , sitting , getting
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