【情态动词+have+done,表示推测与表示虚拟.我只问张达人,网上的资料都不一样.musthavedone/can'thavedoneshouldhavedone/shouldn'thavedoneneedhavedone/needn'thavedonemay(might)havedone/haven'tdonecouldhavedone/coul】

　　情态动词+have+done,表示推测与表示虚拟.我只问张达人,网上的资料都不一样.

　　musthavedone/can'thavedone

　　shouldhavedone/shouldn'thavedone

　　needhavedone/needn'thavedone

　　may(might)havedone/haven'tdone

　　couldhavedone/couldn'thavedone

　　wouldhavedone/wouldn'thavedone