...Unit 2 I'll help to clean up the city park素材 (新版)人...
e.g. It was clever of him to find the way here.他能找到这儿来真是聪明。 understandv.理解;领会 (understood) e.g. This grammar is easy to understand. 这本语法书很容易理解。 10) Thank you again for changing my life.changev.变化;改变 e.g.