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4．The market is crowded with people __________．（　�。�
A．trading and bargainB．trade and bargain
C．trading and bargainingD．trade and bargaining

分析 市場里滿是做買賣和討價還價的人．

解答 答案：C．根據(jù)句子結構The market （主語）is crowded（謂語） with people （賓語）可知trade and bargain做people的定語，因為兩者之間是主動關系，表示做買賣和討價還價的人，所以答案是C．

點評 考查非謂語動詞做定語．現(xiàn)在分詞和過去分詞在句中都可以作定語，但在語態(tài)和時間概念上有區(qū)別，在語態(tài)上，現(xiàn)在分詞表主動，過去分詞表被動，在時間上，現(xiàn)在分詞表示動作正在進行，而過去分詞則表示動作完成．

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