has 前加dosen'可不可以？如果可以，在什么情况下加？t

has 前加dosen'可不可以？如果可以，在什么情况下加？t I cannot thank you enough,it has been a wonderful day.A,It's my pleasureB.It dosen'tmatter Somebody Dosen't disappear again Somebody Dosen't appear again she dosen't allow smoking in the hous one tree dosen't ____ a forest . A:Lily dosen't like country muisc. B:_________ DOSEN'T MEAN ANTHING TO ME是什么意思? has been后面加什么 He dosen't see without glasses and he can't left heavy things