7、cernmustbepaidtotheproblemof....(毫无疑问,对……问题应予以足够重视)3:Obviously,ifwewanttodosomething...isessentialthat...,如果我们想要做么事,很重要的是……)4:Onlyinthiswaycanwe…(只有这样,我们才能……)5:Spare no effort to + V (不遗余力的)二、预示后果1:Obviously,ifwedon'tcontroltheproblem,thechancesarethat…willlead