雅思常用替换词

原词：common

替换词：prevalent, widespread, frequent, ordinary, typical, usual, ubiquitous

原词：important

替换词：crucial, vital, essential, significant, pivotal, key, critical

原词：difficult

替换词：challenging, tough, demanding, arduous, problematic, hard, complex

原词：positive

替换词：constructive, beneficial, favorable, advantageous, optimistic, upbeat, hopeful

原词：negative

替换词：adverse, detrimental, harmful, unfavorable, pessimistic, downbeat, gloomy

原词：interesting