Unit13 Were trying to save the earth!Section A1. try to do =try ones best to do 努力去做某事 Every student should try to study hard in order to study in a university. 为了进入大学学习，每个学生都应该努力学习。2. be related to 与有关 I am notrelatedtohim in any way. 我和他无任何关系。 Everyone in this town should play a part in cleaning it up!3.play a part in 在方面起作用；参与某事 A good diet plays a large part in helping people live longer 健康的饮食在帮助人们长寿方面起着非常大的作用。4. litter ru
