开头:第一first,firstly首先,第一firstofall,tobeginwith,inthefirstplace,tostartwith首先(其次)foronthing(...foranother)一方面(另一方面)ontheonehand(...ontheotherhand)一般来说generallyspeaking,ingeneral起初inthebegining最初atfirst现在atpresent,now目前currently最近recently,lately结尾:因此hence最后finally总之inconclusion简言之inshort,inbrief摘要地说insummary简单地说briefly最重要的是aboveall结果asaresult所以so,forthisreason终于atlast如我所述asIhavesaid如前所述ashasbeennoted最后eventually一般来说byandlarge于是accordingly的确indeed,truly无疑undoubtedly,surely,certainly显然obviously