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【记一记➡构建知识】 be linked to 与……有关联 link with 联合起来, 联系在一起 link up with 与……联合或连接 link. . . to把……与……连接或联系起来 *Exposure to the sun for a long time is closely linked to skin cancer. 长时间受阳光照射与皮肤癌紧密相关。 *The two spacecraft will link up with each other in orbit. 两艘宇宙飞船将于轨道上互相连接。 7. Having seen the situation, a wealthy American businessman, Charles Yerkes, undertook the job of improving the system in 1902 by obtaining ownership of the many different lines and setting up the Underground Electric Railways Company of London. 看到这种情况, 一位名叫查尔斯·耶基斯的美国富商于1902年承担起了改善地铁系统的工程, 他买下许多不同的地铁线, 创立了伦敦电力地铁公司。 【填一填➡激活思维】仿写句子。 ①_________________________, Martin found himself in an unfamiliar district. 由于乘错了公交车, 马丁发现自己到了一个不熟悉的地区。 ②__________________________________, the visitors were taken to the painting exhibition. 参观了图书馆之后, 游客们又被带到了绘画展馆。 Having taken the wrong bus Having been shown around the library 【记一记➡构建知识】 having seen the situation是分词短语的现在完成式, 表示动作发生在主句的谓语动作之前, 完成式在句中作时间状语或原因状语, 其否定形式是在having前加not, 主动形式为having done, 被动形式为having been done。 *Not having got any news from her family, she was very worried. | 
