精选优质文档-倾情为你奉上Unit 1 Friendship1. be good to 对友好 be good for 对有益be bad to/be bad for对.有害be good with .与.相处融洽2. add up 加起来 增加add up to 合计，总计add to 把加到 add that 补充说3. notuntil/till 意思是“直到才”4. get sth/sb done 使完成/使某人被(get用法小结)5. calm down平静下来6. be concerned about 关心 关注 express/show concern about/for. 对表示关心 as far as.be concerned 关于，就.而言 be concerned with/in (concern oneself with/in)涉及、与.有关系7. 当while, when, before, after 等引导的
