bi-, bin-, be-,di-, dwo-, dou-, twi, dwi- = twobipolarbi + polebinocularbin + ocularbipartisanbi + party + san(n)bipartisanshipbi + party + san + shi

guideguyguidevt.nlet his instinct guide him.tour guideguidelinen.guidancen.guidingadj.guidedadj.a guided tour/walk.misguidedadj. mis=mistake + guid +

wis,wid 1.=vis, vid =see 2. =wisdom 3.=wit 4. =waywitnessn.v wit=vis=vid=see + nessThe world is going through the biggest wave of mergers and acquisi

opt-, ops-, oc-, oci- , ocul-, ow = eye, to seeopticadj. opt=eye + icthe optic nerve.opticaladj.optical instrumentoptical expeirmentwindown. wind + ow

-vent, -ven, -van = goadventconveneconventionconventionalconventionallyunconventionalconvenientconvenientlyinconvenientconvenienceinconvenienceprevent

-trib = give，给tribetribaltribesmantributetributarytribunetribunalretributioncontributecontributioncontributingcontributorattributeattributionattributa

dwell 居住、栖身dwellvidwell on sth.dwell among …dwellern.dwellingn.dullvt&vi&adj&nI felt she found me boring and dull.dumbadj.a young deaf and

accentn.accentuatevt.incentiven.approachvt&vi ap=ad=to + proach=prop-=come closerapproach to healing patients.the approach of spring.approachingad

liter-=letterlettern.letteringn.newslettern.literaladj. liter=letter + alliterallyadv.literateadj.literacyn.illiterateadj.illiteracyn.literaryadj.lite

interpretinterpretervt&vi.interpretationn.interpretiveideaidealadj. idea + althe ideal candidateideallyadv.an ideally suited couple.idealismn.idea