Sally did her homework yesterday. Past SimpleSally does her homework every day. Present SimpleSally will do her homework tomorrow. Future SimpleSally has already done her homework. Present PerfectSally had done her homework. Past PerfectSally was doing her homework. Past ContiniousSally will have done her homework. Future PerfectSally has been doing her homework. Present Perfect ContinuousSally had been doing her homework. Past Perfect ContinuousSally will be doing her homework. Future ContinuousSally will have been doing her homework. Future Perfect Continuous