雅思单词难背，但是掌握了方法，是很有效果的，词根记忆法就是一个记忆雅思词汇的好方法
-aster-,-astro-,-stellar- star asterisk
-audi-,-audit- hear audience
-auto- self autograph
-bio- life biology
-capit- head, chief capital, captain
-ced-go, move,yield precede
-chron- time chronic
-cycle- circle unicycle
-dic-,-dict- say, speak contradic
-fact-,fect- make, do benefactor
-geo- earth geothermal
-graph-,-gram- write, writing telegraph
-hetero- different, other heterogeneous
-homo- same homosexual
-hydr-,-hydro- water dehydrate
-log-,-ology- speech,word,study biology
-man-,-manu- hand manufacturer
-mega- great, large megaphone
-mit-,-miss- send transmit
-mort- death mortal, motality
-onym-,-nomen- name antonym, synonym
-pathy-feeling, disease sympathy
-phon- sound telephone
-pod-,-ped- foot pedestrian
-pon-,-pos- put, place postpone
-psych- mind psychology
-scrib-,-script- write tapescript
-son- sound sonic
-spect- look at prospect
-spir- breatheinspiration, respiration
-tele- far telephone
-theo-,-the- god theology, atheist
-therm-,-thermo- heat thermal, thermometer
-ven-,-vene- come convene
-ver- true verify
-vid-,-vis- see visual, vision
-voc-,-vok- call vocal
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