and引導(dǎo)的是并列成分,句子的意思是,一些早期社會(huì)不再認(rèn)為某些禮儀對于良好舉止的形成是必要的,并且拋棄了它們.其實(shí)就是一個(gè)并列句,謂語是ceased to do sth and abandoned sth,consider 一直到wellbeing 是動(dòng)詞帶賓語帶賓補(bǔ)的結(jié)構(gòu),意為 認(rèn)為sth是有必要的.但是有人說不是典型并列句，我很贊同您的說法，能否再給幾個(gè)典型并列句的例子我就采納典型并列句指and后面跟的也是一個(gè)完整的句子也就是說，主謂明確，例如 1.Think it over and you will find a way out2.He has a somewhat swelled head(驕傲自大)and I don't like this.3.He heard a cry for help, and he rushed out of the house. 你給的句子and連接并列成分表示順序,是并列句，（我們在大學(xué)里面稱之為并列結(jié)構(gòu)，）效果如同 He opened the door and went in.(新編英語語法教程P512)但是你要區(qū)分的有一些句子形似并列，但是卻不是并列結(jié)構(gòu)。例如，This room is noce and warm. (= nicely warm)I'll go and bring back your boots. (=go in order to bring back)You must try and come to the party. (=try to come to)以上三個(gè)句子都不是并列結(jié)構(gòu)。