15. arrive at a conclusion 得出结论 16. put sb to shame 使某人相形见绌 eg. His courage put all the other students to shame. / 他的勇气令其他学生都感到惭愧不如。 17. be astonish at sth 因某事感到震惊 18. make the bed 铺床 19. blame sb for sth / it i...