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        1. This pair of socks ______ worn out. I'll have to buy a new ______.
          A.is, oneB.a(chǎn)re, onesC.is, pairD.a(chǎn)re, pairs
          C

          試題分析:前半句的主語為單數(shù),中心詞是pair,故be動詞用is,后半句表示的含義是我想買新的一雙,前句出現(xiàn)的數(shù)量短語,后半句可以簡短地用量詞就可以了,本題使用pair,故本題選C。
          點評:本題除了數(shù)量短語的使用,還要注重被動語態(tài)的使用,在英文中可用量詞+of+名詞來表示數(shù)量,如a glass of water和two boxes of apples,被動語態(tài)的結(jié)構(gòu)為be+動詞的過去分詞,有時態(tài)、人稱和數(shù)的變化。
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