7、ernmustbepaidtotheproblemof……(毫无疑问,对……问题应予以足够重视)3:Obviously,ifwewanttodosomething…itisessentialthat……(显然,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)五、预示后果1:Obviously,ifwedon'tcontroltheproblem,thechancesarethat……willleadusindanger.(很明显,如果我们