新一輪中考復習備考周期正式開始,中考網為各位初三考生整理了各學科的復習攻略,主要包括中考必考點、中考常考知識點、各科復習方法、考試答題技巧等內容,幫助各位考生梳理知識脈絡,理清做題思路,希望各位考生可以在考試中取得優異成績!下面是《2018中考英語知識點:數詞的基本構成》,僅供參考!
數詞的基本構成
(一)基數詞——從1數到N
1.1—12的基數詞是獨立的單詞,即:one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve.
2.13—19的基數詞以-teen結尾。如:fourteen,seventeen等,但13,15,18較特殊,13—thirteen 15—fifteen 18—eighteen.
3.20—90的整十位均以-ty結尾。如:sixty,ninety,但20,30,40,50,80較特殊,20—twenty,30—thirty,40—forty ,50—fifty ,80—eighty.
4.十位數與個位數之間要加連字符號“-”,如:28—twenty-eight,96—ninety-six.
5.百位和十位(若無十位則和個位)之間加and,如:148—one hundred and forty-eight ,406—four hundred and six.
6.hundred(百),thousand(千),million(百萬),billion(十億)等前面即使有具體的數詞,也不能在它們的后面加s.如:600—six hundred,8百萬—eight million.
7.1000以上的數字,從后往前數每三位加一個逗號“,”第一個逗號前為千(thousand),第二個逗號前為百萬(million),第三個逗號前為billion(十億)。英語中無“萬”這個詞,我們可以用“幾十個千(thousand)”表示幾萬,“幾百個千(thousand)”表示“幾十萬”。如:2,510=two thousand five hundred and ten;84,296=eighty-four thousand two hundred and ninety-six;274,350=two hundred and seventy-four thousand three hundred and fifty.
8.hundred,thousand,million用復數形式修飾名詞時要用“of+復數名詞”,如:數以百計的年輕人hundreds of young people;數以千計的書thousands of books.注意:hundreds of /thousands of/millions of +復數名詞,其前面不能加具體的數詞,但可加several或 many.
Hundreds of new buildings have sprung up here this year.
Thousands upon thousands of people in South Africa are rising against their oppressors.
Thousands and thousands of people come to visit the city every day.
Millions of dollars have gone into the building of this factory.
(二)序數詞——由基數詞轉變而來,表示“這是第N個”
1.口訣巧記基數詞變序數詞:“一、二、三,特殊記,八去‘t’,九去‘e’,‘ve’要用‘f’替,見‘y’變成‘i’和‘e’,詞尾加上‘th’,若是遇到幾十幾,只變個位就可以。”第一、第二、第三分別:first,second,third,eight—eighth nine—ninth,five—fifth,twelve—twelfth,twenty—twentieth,forty—fortieth,twenty-five—twenty-fifth.
2其余情況均在基數詞后加th.如:six—sixth,nineteen—nineteenth ,hundred— hundredth,thousand—thousandth等。
3.序數詞有時用縮寫形式:
first——1st,twenty—second——22th.
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