20xx年中考英語知識(shí)點(diǎn)總復(fù)習(xí) 數(shù)詞課件-文庫吧
2025-05-28 04:44 本頁面
【正文】 eight hundred (2) 表示不確切數(shù)目時(shí)可以用復(fù)數(shù)形式，與 of連用表示 “ 數(shù)以 … .計(jì)的 ” ； hundreds of 成百上千 thousands of 成千上萬 . Thousands of trees must be planted every year. (3) 基數(shù)詞的復(fù)數(shù)形式可用來表示人的歲數(shù)和年代。 年代： in the +年代 +s(或 ’s) 表示“在 … 世紀(jì) … 年代” in one’s +整 10數(shù)的復(fù)數(shù)形式 表示一個(gè)不確定的年齡 . He went to the United States in his twenties. That was in the early forties (4) 由基數(shù)詞和名詞合成的形容詞作定語時(shí)，其中的名詞只用單數(shù)。 . She wrote a twothousandword position last night. Claude is an elevenyearold boy. I ‘ m a eighteen year old girl. Exercise － How many people will e to Beijing next year? (2022蕪湖 ) － It’s hard to say, ________ people, I think. A. million of B. millions of C. three millions D. three millions of Exercise In the past twenty years, many tall buildings have been built in our city. look! This is a ______. (09年天津中考 ) A. 70floor building B. 70floors building C. 70floor buildings floors building 基數(shù)詞 one two three five eight nine Twelve 序數(shù)詞 first second third fifth eighth ninth twelfth （ 1）第一 — 第十九的構(gòu)成 。 除第一，第二，第三，第五，第八，第九，第十二為特殊形式，其他的序數(shù)詞均由其對應(yīng)的基數(shù)詞加后綴 th構(gòu)成。 four fourth six sixth seven seventh eleven eleventh thirteen thirteenth fourteen fourteenth fifteen fifteenth sixteen sixteenth seventeen seventeenth eighteen eighteenth nieen nieenth （ 2）整十的數(shù)字序數(shù)詞的構(gòu)成方法：將對應(yīng)的基 數(shù)詞結(jié)尾 y變 i，再加 eth. . twenty twentieth thirty thirtieth forty fortieth fifty fiftieth sixty sixtieth seventy seventieth eighty eightieth niy niieth （ 3）表示 “ 幾十幾 ” 時(shí)，十位數(shù)的基數(shù)詞不變，只把個(gè)位數(shù)變成序數(shù)詞即可。 . 36 thirty six 第 36 thirtysixth 98 niyeight 第 98 niyeighth 第 55 fiftyfifth 第 74 seventyfourth 第 88 eightyeighth 第 199 （ 4）百，千，百萬等的序數(shù)詞在詞尾加 th。 . 第一百 hundredth 第一千 thousandth 第一百萬 millionth 第十億
教學(xué)教案相關(guān)推薦
鄂ICP備17016276號(hào)-1