Unit6 An old man tried to move the mountains.知识点详解1. trytry doing sth 尝试做某事 I tried smoking at the age of 15, it was terrible.try to do sth 尽力、努力做某事 He tries to learn English well.try on 试穿 Can I try it on? Can I try on the pair of the shoes?2. telltell sb to do sth 告诉某人做某事 My mother told me to lock the door.Tell sb not to do sth 告诉某人不要做某事 My parents often tell me not to smoke.Tell sb that+从句 A student told me that his English was so poor that he couldnt follow the teacher.3.