China has changed a lot in the past fifty years.同义句
问题描述:
China has changed a lot in the past fifty years.同义句
改为lots of changes to china in the past fifty years
答
China has changed a lot since fifty years ago.There have been lots of changes to China in the past fifty years.注意:changes是可数 的复数,所以前面用lots of ,所以前面是 have been.