_____of the warm water _____already been used up.
A.Two-third;hasB.Two-third;have
C.Two-thirds;hasD.Two-thirds;have
C

試題分析:英語中一般用基數(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。由分?jǐn)?shù)修飾的主語后面謂語動(dòng)詞的數(shù),和被修飾主語的單復(fù)數(shù)保持一致。選項(xiàng)AB結(jié)構(gòu)有誤,the warm water表示抽象含義,不可數(shù),故謂語動(dòng)詞用單數(shù),選C。
點(diǎn)評:英語分?jǐn)?shù)的表達(dá)規(guī)則比較固定,學(xué)習(xí)中應(yīng)牢記這些基本規(guī)則。需注意的是,由分?jǐn)?shù)修飾的主語后面謂語動(dòng)詞的數(shù),和被修飾主語的單復(fù)數(shù)保持一致。
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