环顾城镇四周他好像离开好久了 looking 非谓语动词as though had been 展示的是虚拟语气与过去事实相反 欢迎再问哟if i had seen the movie ，i （would tell）you all about it now??这个呢!>谢谢这是if 的虚拟语气的用法 if i had seen the movie 表示与过去事实相反i （would tell）you all about it now表示与现在事实相反