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9．Hong Kong has changed a lot over the years．（改為同義句）
Therehavebeen a lot of changes in Hong Kong over the years．

分析 --歷年來香港已經改變了許多．
--歷年來有許多改變在香港．

解答答案：have been．考查同義句．"歷年來香港已經改變了許多"，可以表達為"歷年來有許多改變在香港"，用there be句型，現在完成時態結構是there have/has been．由主語changes復數，可知用there have been．答案是 have been．

點評同義句轉換最基本的是要保持原意不變，在理解語境的基礎上，抓住關鍵單詞或詞組，運用相同詞意的單詞或詞組完成試題．

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