名词
后缀er： 人·物：如：cleaner carpenter shopkeeper ruler
listener photographer traveler cooker
lawyer leader master smoker
villager barber elder hunter
insider 内人
winner speaker soldier waiter
banker n 银行家(bank 银行)
teenager（n 青少年(teenage十到十九岁)物品·机器
washer n 洗衣机(wash洗)
5ightern打火机(light点火)
heater n 加热器(heat热)
boiler .n锅炉(boil)
①后缀or:
mentor n 导师 (me nt 精神) wendor n 小版(vend出售 ge neaton发电机(gene「产生)compressor n 压增机
tractorn.托控机(tract拖·拉)
professor sailor emperor
reporter author editor mon itor
ant 人 accountant n 会计(actcount计数)
assistantn动手(assist帮助)
in habita nt n居民(in habit 居住)
②后缀ar :人·物 liarn说谎者(lie说谎)beggarn乞丐(beg乞求)registrarn注册员(register注册)cellarn地窖(cell小房子+ar)altarn祭坛(alt高+ar…离出地面…祭坛)calendarn日历(calend一天+ar)
