2017中考英語(yǔ)數(shù)詞知識(shí)點(diǎn):序數(shù)詞的應(yīng)用

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序數(shù)詞的應(yīng)用
    序數(shù)詞應(yīng)注意的幾點(diǎn)事項(xiàng):
    1. 多位數(shù)的基數(shù)詞變成序數(shù)詞時(shí),只需將末位基數(shù)詞變成序數(shù)詞,前邊的基數(shù)詞不變。如:
    forty-two 42 forty-second第42
    nine-hundred 900 nine-hundredth第900
    2. 當(dāng)序數(shù)詞用阿拉伯?dāng)?shù)字表示時(shí),必須在數(shù)字后加上序數(shù)詞的最后兩個(gè)字母。如:
    21st第21
    32nd第32
    3. 序數(shù)詞前一般要用定冠詞the,如果序數(shù)詞前用a或an時(shí),則表示"又一;再一"(沒(méi)有具體范圍的限制)。如:
    Though he had failed twice, he wanted to try a third time.
    盡管他已失敗了兩次,他還想再試一次。
    The little monkey had had three apples, and he wanted to eat a fourth one.
    那只小猴子已經(jīng)吃了3個(gè)蘋(píng)果,他還想再吃一個(gè)。