（1）前缀的特点：常见的前缀，比如re，多表示“重复”“再”的意思。review，reunion，restart，rebuild。还有前缀un，表示反义。happy-unhappy，usual-unusual，lock-unlock，lucky-unlucky。（2）后缀的特点：一些词加上后缀...

1、意思不同carefree：adj.无忧无虑的；无牵挂的；不负责任的。例如：Helookedhappyandcarefree.他看起来轻松愉快。careless：不小心的；不仔细的；粗心的；粗心造成的；疏忽引起的；不担忧的。例如：Itwascareless...

⑤双前缀+词根：re?(再)+dis?(取下)+cover(盖)→rediscover(再发现)⑥词根+双后缀：care(用心)+?less(不)+?ly(地)→carelessly(不小心地)⑦前缀+双词根：tri?(三)+gono(角)+metry(测量)→trig...

派生法,即在词根的前后加前缀、后缀,派生出新的词,很容易记忆。如:appear-disappear;understand-misunderstand;happy-happily-happiness-unhappy;care-carefuly-carefully-careless-carelessly-carelessness等等。转化法,即词形不变,由...

形容词用。另一些词具有同一个词根,如单词care既具备名词性质又具备动词性质,它的同根词有careful,carefully,careless,carelessly,对于这些词,我们应重点记忆。再如:north→northern,noise→noisy→noisily等。利用合成词联想记忆,如学到...

One:donotcarelesslytramplethetree,donotpickflowers,donotenterflowerbedtoplay,intheclasspropagandizetoloveflowersandplantsThetrees.Two:cherishtheresource:thebookthatthe...

Don'tusetimeorwordscarelessly.Neithercanberetrieved.Lifeisnotarace,butajourneytobesavoredeachstepoftheway.Yesterdayishistory,TomorrowisamysteryandTodayisagift:...

"Thatiscertainlyaveryprettydeception,"saidthedoctor'sfriends;carelessly,however,fortheyhadwitnessedgreatermiraclesataconjurer'sshow;"prayhowwasiteffected?""这当然是一个很漂亮行骗

DownbyashadyarbourIcarelesslydidstrayWherethethrushestheywerewarblingThevioletstheywerecharmingFortoviewtwoloverstalkingawhileIdiddelayShesaid,"Mydear,don'tleavemeallfor...

英语语法所规定的,之间老师说反义句只能自己积累了.careful是细心的,hopeful是有希望的,我猜应该是根据词义而定吧,这我也不能明确辨明,抱歉.