ab-absence n.(ab 否定-sence 拉丁词汇存在to be ) absent a.absorb vt.(ab 离开sorb 吸收。to swallow up,to suck 拉丁语)absorbed a. be absorbed in doing.absorption n. 吸收融合of (nutrition) ,专心in doing sth.ab- , abs-1. 从,来自from2. 离开 away from3. 表否定 notabs- 词根首字母为c,t 前缀扩展为abs- abstract a./n. vt. 提炼(abs 离开tract 拉,抽出) abstraction n. 抽象化,提炼ad-adapt (apt适应,倾向于同fit) be apt to do/tend to do admit ( mit送,放出send,词源同mission使团使命。允许进入,承认,同意)adult (ul同ol,词源old,t为过去分词后缀。)adolescent 青少年(adol, ad,ol,同上,esce起始动词后缀,即成长中的,ent名词后缀)adventur