His son is _______ now. Today it’s his _______ birthday.
A．four; four B．fourth; four C．four; fourth D．fourth; fourth
C

試題分析：句意：他的兒子現(xiàn)在四歲了。今天是他的第四個(gè)生日。結(jié)合語(yǔ)境可知前文用基數(shù)詞作表語(yǔ)，下文用序數(shù)詞作定語(yǔ)，故選C。
點(diǎn)評(píng)：英語(yǔ)中數(shù)詞有基數(shù)詞與序數(shù)詞之分,基數(shù)詞表示物品的數(shù)目,編號(hào)等,序數(shù)詞表示物品的順序等,前面一般搭配定冠詞the使用.但是這些數(shù)詞又都有各自不同的語(yǔ)境的習(xí)慣用法,語(yǔ)意表達(dá)上有交叉,注意不能以漢語(yǔ)思維思考英語(yǔ)問(wèn)題.
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