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17．物價-直在上漲．The prices of goods have been rising．

分析 The prices of goods have been rising

解答答案：The prices of goods have been rising．結合句意可知上漲不及物動詞rise，動作發生在過去，持續到現在，還一直在持續，故用現在完成進行時have/has+been+doing，主語the prices of goods，故have，故答案是The prices of goods have been rising．

點評現在完成進行時，是英語中，動詞的一種基本時態，其構成為：主語+助動詞（have/has）+been+動詞的現在分詞+其他成分．表示動作從某一時間開始，一直持續到現在，或者剛剛終止，或者可能仍然要繼續下去．（與since，for連用時，要用連續性動詞，不可用瞬間動詞，但連續性動詞常常表示動作會進行下去）

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