文章主體句式(Body)：
一、原因 結(jié) 果
例：There are probably +[many\several\three]+[reasons\causes]+ for this +[dramatic\marked]+[increase\decline\change]+ in...
二、比 較 對(duì) 照
例：[There is no doubt that\Obviously,]+ it has [its\both]+[drawbacks\disadvantages\negative effects]+[as well as\and]+[merits\advantages\positive effects]...
三、例 證
例：We may +[cite\quote\mention\take\point out]+[a single\a common\another]+ example of...
四、事 實(shí)
例：
No one can +[deny\doubt\ignore\overlook]+ the +[bare\hard\essential\profound]+ fact that...
五、數(shù) 據(jù) 調(diào) 查
例：
A+[recent\new\nationwide]+[study\survey\poll\investigation]+[conducted\taken]+[at a factory\by officials]...
六、權(quán) 威（專 家）
例：
As one +[scientist\writer\doctor\psychologist]+[wrote\commented\pointed out\noted], ...
七、分 析
例：
It seems +[quite\almost]+[(un)likely\(im)possible\(in)credible\(in)conceivable]+ that...
一、原因 結(jié) 果
例：There are probably +[many\several\three]+[reasons\causes]+ for this +[dramatic\marked]+[increase\decline\change]+ in...
二、比 較 對(duì) 照
例：[There is no doubt that\Obviously,]+ it has [its\both]+[drawbacks\disadvantages\negative effects]+[as well as\and]+[merits\advantages\positive effects]...
三、例 證
例：We may +[cite\quote\mention\take\point out]+[a single\a common\another]+ example of...
四、事 實(shí)
例：
No one can +[deny\doubt\ignore\overlook]+ the +[bare\hard\essential\profound]+ fact that...
五、數(shù) 據(jù) 調(diào) 查
例：
A+[recent\new\nationwide]+[study\survey\poll\investigation]+[conducted\taken]+[at a factory\by officials]...
六、權(quán) 威（專 家）
例：
As one +[scientist\writer\doctor\psychologist]+[wrote\commented\pointed out\noted], ...
七、分 析
例：
It seems +[quite\almost]+[(un)likely\(im)possible\(in)credible\(in)conceivable]+ that...