cert
sert,ser
cern,cret
cert
詞根含義:settled;
助記詞:certain,cert(確定的)+ain=》確定的
同根詞:certain, ascertain, certify, certificate, certitude
sert,ser
詞根含義:to knit, or join;
助記詞:insert,in(里面)+sert(加入)=》加入到里面=》插入
同根詞:series, seriate, serial, assert, desert, exert, insert
cern,cret
詞根含義:sift,to separate;用篩子篩,分開,挑選
助記詞:discern,dis(分開)+cern=》用篩子分開=》察覺、分辨、識(shí)別(用于人的觀察結(jié)果,對(duì)詞義在具體語(yǔ)境中費(fèi)曼的典型)
同根詞:concern, discern, discreet, discrete, secret, secretary, secrete