Question

4．從上個月起，那個新博物館已經(jīng)投入使用．The new museum has been in use since last month．．

Answer 1

分析 The new museum has been in use since last month．

解答 答案：The new museum has been in use since last month．
句中的投入使用come into use發(fā)生在過去，已經(jīng)持續(xù)了一段時間，用現(xiàn)在完成時have/has+過去分詞，主語是the new museum三單，故用has，come into use是短暫性動詞短語，需換成狀態(tài)be in use，be的過去分詞been，故The new museum has been in use，時間狀語since last week從上月起，故答案是The new museum has been in use since last month．

點評 現(xiàn)在完成時表示過去發(fā)生或已經(jīng)完成的動作對現(xiàn)在造成的影響或結(jié)果，或從過去已經(jīng)開始，持續(xù)到現(xiàn)在的動作或狀態(tài)． 時間狀語：recently，lately，since…for…，in the past few years，etc．基本結(jié)構(gòu)：have/has+done  否定形式：have/has+not+done．