U4~6单元易错单词Unit41.charity慈善2.microphone麦克风3.advertise做广告4.leaflet传单5.camera照相机6.introduce介绍7.business/businessletters/localbusinesses企业/商业信函、地方企业8.organization组织9.audience听众（单复同形）10.curtain帷幕11.arrangement安排12.education教育13.silent寂静14.speech演讲15.purpose目的16.rise-rose(过去式)-risen(过去分词)升起17.break-broke(过去式)-broken(过去分词)升起、休息Unit51.international国际的2.pocket口袋3.further较远4.interviewer采访者5.blindness失明6.affect影响7.cure治愈8.medical医学的9.treatment治疗10.volunteer(doctors)医务工作者11.operation手术12.patient病人13.afford买得起14.indeed确实15.proud自豪的16.medicine/takesomemedicine药/服药17improve改进18.agreement同意19.invention发明20.ugly/ugliness丑陋的/丑陋21.process过程22.decision/makeadecision决定/做决定23.research调查24.voluntary（work）义务的25grateful感激的26.healthcare保健Unit61.disabled有残疾的2.elderly年老的3.tough费力的4.mountain高山5.excellent极好的6.spirit精神7.record记录8.aim/purpose目的9.toothbrush牙刷10.perfect完美的11.attention专心12.umbrella伞13.wise明智的14.wine酒15.fund基金16.certificate证书17.contact联系18.download下载19.experienced（teacher）/（rich）experience有经验的/经验