do
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
Talkingwithyourmouthfullwon’tdo.
Onepieceofbreadwilldo.
(3)做、办
Doasyouaretoldto.
WheninRome,doastheRomansdo.
Letherdoasshelikes.
D.习语
do…with…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
doone’sbest/bit/part=doeverything/all/whatonecan尽力
do…up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
