以英語為母語且教育程度高的人，普遍認識的單字量高達約15000個。而我國初中生只要背熟1200字就足以應付升學考試需求，3000字則能應付日常生活與職場英語會話需求，且能自由閱讀九成的英語報章雜誌。
雖然有些人會說背單字沒有用處，或許對了一半，但那是指你已經記憶超過5000字以後才有資格談的。擴充單字量永遠是最快速達到學習英語的方法，之後才是如何讓自己跟那些單字更加熟稔，但是要如何背誦又是另外一門學問了。
筆者自己在學習英語過程，發現直接背誦單字是效果最直接的方法，但是與其花時間記憶一大堆雜亂單字，不如將最常用的3000單字背誦下來，其他生字自然可以透過前後文聯想、發問或查字典等方式認識新單字。
接下來的26篇文章，我們會將以A到Z字母開頭的常用單字分別表列出來。
如果可以列印在A4紙上更好，已經認識的單字直接塗抹掉，留下不認識的生字，之後再反覆背誦生字。如此一來就能有效率的透過系統化學習，讓自己記憶所有英語單字。
3000英語單字：字母 E 開頭
- each
- eager
- ear
- early
- earn
- earnings
- earth
- ease
- easily
- east
- eastern
- easy
- eat
- economic
- economics
- economist
- economy
- edge
- edition
- editor
- educate
- education
- educational
- educator
- effect
- effective
- effectively
- efficiency
- efficient
- effort
- egg
- eight
- either
- elderly
- elect
- election
- electric
- electricity
- electronic
- element
- elementary
- eliminate
- elite
- else
- elsewhere
- embrace
- emerge
- emergency
- emission
- emotion
- emotional
- emphasis
- emphasize
- employ
- employee
- employer
- employment
- empty
- enable
- encounter
- encourage
- end
- enemy
- energy
- enforcement
- engage
- engine
- engineer
- engineering
- English
- enhance
- enjoy
- enormous
- enough
- ensure
- enter
- enterprise
- entertainment
- entire
- entirely
- entrance
- entry
- environment
- environmental
- episode
- equal
- equally
- equipment
- era
- error
- escape
- especially
- essay
- essential
- essentially
- establish
- establishment
- estate
- estimate
- etc
- ethics
- ethnic
- European
- evaluate
- evaluation
- even
- evening
- event
- eventually
- ever
- every
- everybody
- everyday
- everyone
- everything
- everywhere
- evidence
- evolution
- evolve
- exact
- exactly
- examination
- examine
- example
- exceed
- excellent
- except
- exception
- exchange
- exciting
- executive
- exercise
- exhibit
- exhibition
- exist
- existence
- existing
- expand
- expansion
- expect
- expectation
- expense
- expensive
- experience
- experiment
- expert
- explain
- explanation
- explode
- explore
- explosion
- expose
- exposure
- express
- expression
- extend
- extension
- extensive
- extent
- external
- extra
- extraordinary
- extreme
- extremely
- eye
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