Twenty years _____ passed since I came to this school, but I feel twenty years _____a short time in my life.
A．has; are B．have; is
C．has; is D．have; are
B
根據(jù)句子的意思，本題的前半句“自從我來到這個學(xué)校已經(jīng)過去了二十年”中出現(xiàn)的twenty years強調(diào)“二十個年頭”，因此謂語用復(fù)數(shù)形式，而后半句“我覺得二十年是我人生中短暫的一段時光”，其中的twenty years則是a period of time，被看成了一個整體，因此謂語動詞用單數(shù)形式。
類似的情況有：表示時間、重量、金額、距離等的復(fù)數(shù)名詞作為一個整體看待時，謂語動詞用單數(shù)形式，如：Twenty dollars is enough for the coat.
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