ynotaskhim?But:Whattodo?Howtodo?Whentodo?Whytodo?Gopostaletterforme.Tryeatalittle.Tryhelphim.Note:eptable.AtestiteminTEM4"Itseemsthatshewasthereattheconference."Thesentencemeansthat____.A.sheseemstobethereattheconference.?B.sheseemedtobethereattheconference.?C.sheseemstohavebeenthereattheconference.?D.sheseemedtobeingthereattheconference.(2009)ohavebeendoneProgressivetobedoing——PerfectiveProgressivetohavebeendoing——Pastaction/eventNotesontheuseof“to”Infinitive“to”usedalone——Toavoidrepetition,use“to”monininformalstyle,e.g.Youmaygoifyouwantto.Butthebaseverbshouldberetainedifitisbeorhave,e.g.Aren’tyouthemanager?No,Idon’twanttobe.Hehasn’tfinishedyet.Well,heoughttohave.Sometimesthewholeinfinitive-clausecanbeomitted,e.g.You’llmakeitifyoutry(to).I’dliketotraveltoGuilin,butIhaven’tgotthemoney(to).