19．There are forty-eight students in our class．________of us are girls．（　�。�
A．two threeB．two thirdC．two thirds

分析 在我們班有48名學(xué)生．我們之中三分之二是女生．

解答 答案：C．
英語中分?jǐn)?shù)的表達(dá)，先說分子數(shù)后說分母數(shù)，用基數(shù)詞表示分?jǐn)?shù)的分子，用序數(shù)詞表示分?jǐn)?shù)的分母．當(dāng)分子是一時(shí)，分?jǐn)?shù)的分母用單數(shù)形式，在表示分?jǐn)?shù)時(shí)，當(dāng)分?jǐn)?shù)的分子大于一時(shí)，分?jǐn)?shù)的分母要用復(fù)數(shù)形式，因此三分之二應(yīng)該表達(dá)成two thirds，故選C．

點(diǎn)評 本題主要考查的是分?jǐn)?shù)的表達(dá)，先說分子數(shù)后說分某數(shù)，分子用基數(shù)詞，分母用序數(shù)詞，分子數(shù)超過"1"時(shí)，分母用復(fù)數(shù)．

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