V-ing的各种形式:(以动词do为例)时态语态主动被动一般式完成式doingbeingdonehavingdonehavingbeendone否定式:not/neverdoing在时间上表示一个正在进行或与谓语动词同时发生或存在的动作和状态一般式:完成式:在时间上表示该动作先于谓语动词的动作或状态1
Hedenied________anythingaboutit
(know)knowingPresentactivetense2
Theproblem,____________________foryears,hasbeensolved
(discuss)_____________________________havingbeendiscussed3
Hewassoluckythatheescaped_________(hurt)beinghurtpresentpassivetense__________________foralongtime,thecomputerneedsrepairing
(use)4
Havingbeenusedpresentactiveperfecttensepresentpassiveperfecttense1
Becausewedon’tknowheraddress,wecan’tgetintouchwith
()Notknowing2
Becausehehadn’treceivedananswer,hewroteagain
()Nothavingreceived3
没完成这个项目,他们必须在这那儿再呆两周
________________programme,theyhavetostaythereforanothertwoweeks
(complete)Nothavingcompleted4
BecauseIhaveneverbeentoSh