题目内容
9.______ a new house is impossible for the young couple because they haven't saved enough money.( )A. | Buy | B. | Buying | C. | Bought | D. | Having bought |
分析 对年轻的夫妇来说买一个新房子是不可能的,因为他们没有攒够足够的钱.
解答 答案B分析句子成分可知,这里的is impossible是系表结构作谓语,前面的部分是主语.A选项动词原形不能作主语;B选项动名词可以作主语;C选项过去式或过去分词不能作主语;D选项现在分词的完成式也不能作主语.因为能作主语的非谓语形式是动名词和不定式,故选B.
点评 本题考查动名词作主语,解答本题的关键是正确分析句子成分和结构,明确能作主语的非谓语形式是动名词和不定式.
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