an unimportant part of ourdevelopment是什么意思

an unimportant part of ourdevelopment是什么意思 (a/an) unimportant Unimportant 前面用a还是an? 用a/an填空 ( )popular ( )important ( )unimportant ( )interesting ( )uninteresting I don't think he will ( ) the unimportant meeting.A take part in B attend part of an an integrated part “Whether you get an unimportant cold or terrible killer-cancer,smoking is harmful.”是简单句、并列 play an （important） role /part in play an important part in 的意思 take an active part in (doing) take an action=take part + 用take an active part in造句~ play an active part in 造句 an important part of our development have an important part in 怎么翻? friends play an important part in our livesfriends play an important part in our lives 为什么take part in没有a,但是take an active part in要加an?