A.aux.v.
（1）帮助构成一般过去时或一般现在时的疑问或否定式
Theydonotbelieveit.
Whenidtheyarrivethere?
（2）用在肯定句和祈使句中加强语气
Idomissyou,Mum.
Shedoessingwell.
Dobeontime.
Soshedidcomeafterall.
（3）用来表示前边提到的动作（以免重复）
---MayIcomeroundintheevening?---Yes,pleasedo.
Iknewhewouldhelpus,andhedid.
（4）用于某些倒装句中
OnlythendidIrealizehehadbeenwrong.
Neverdidheknowanythingaboutit.
B.做vt.
CanIdoanythingforyou?
Weoftendoourhomeworktogether.
Theglassisbroken.whodidit?
Wedidsomereadinglastnight.
Shedidmostofthetalking.
C.vi.
（1）表示生活 、学习等情况
Howdoyoudo?
TheydidverywellinEnglishbutbadlyinmaths.
Howdidyoudointheexam?
Howareyoudoing?
（2）行了、够了、可以
Talkingwithyourmouthfullwontdo.
Onepieceofbreadwilldo.
（3）做、办
Doasyouaretoldto.
WheninRome,doastheRomansdo.
Letherdoasshelikes.
D.习语
dowith处理Whathaveyoudonewithmybike?
candowith将就用Icandowiththeoldbed.
dosomethingabout对采取措施
dosb.afavor=doafavorforsb.帮某人个忙
doawaywith废除、破除、去掉
dosb.good/harm/wrong=dogood/harm/wrongtosb.对某人有益/有害/冤枉某人
doonesbest/bit/part=doeverything/all/whatonecan尽力
doup包扎、扣（纽扣）
dowithout没有也行、不需要
havesomethingtodowith与有关
doright/wrong做得对/做错了
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