1.Bynextmonth,IwillhavebeenstudyingSpanishfor3years.
2.Bytheendoftheweek,theteamwillhavebeenworkingonthisprojectfor2months.
3.Bythetimetheconcertstarts,thebandwillhavebeenrehearsingforweeks.
4.Bynextyear,Iwillhavebeenlivinginthiscityfor5years.
5.BythetimeIfinishthisbook,Iwillhavebeenreadingforhours.
6.Bytheendoftheday,Iwillhavebeencleaningthehouseallmorning.
7.Bythetimethepartystarts,wewillhavebeendecoratingthevenueforhours.
8.Bynextsummer,shewillhavebeenworkingatthecompanyforadecade.
9.Bytheendofthesemester,thestudentswillhavebeenstudyingforfinalsforweeks.
10.Bythetimewearrive,theflightwillhavebeendelayedforhours.
11.Bynextmonth,Iwillhavebeenpracticingyogaconsistentlyfor6months.
12.Bytheendoftheyear,theywillhavebeensavingupfortheirdreamvacationformonths.
13.Bythetimethemovieisover,wewillhavebeenwatchingfor2hours.