In Simple Present, the action is simply mentioned and there is nothing being said about its completeness.I eat. / I sleep. / I play.
In Present Continuous, the action is on-going/ still going on and hence continuous.I am eating./ I am sleeping./ I am playing.
In Present Perfect, the action is complete or has ended and hence termed Perfect.I have eaten./ I have slept./ I have played.
In Present Perfect Continuous, the action has been taking place for some time and is still ongoing.I have been eating./ I have been sleeping./ I have been playing.
In Simple Past, the action is simply mentioned and understood to have taken place in the past.I ate./ I slept./ I played.
In Past Continuous, the action was ongoing till a certain time in the past.I was eating./ I was sleeping./ I was playing.
Past Perfect is used to express something that happened before another action in the past.I had eaten./ I had slept./ I had played.
Past Perfect Continuous is used to express something that started in the past and continued until another time in the past.I had been eating./ I had been sleeping./ I had been playing.
Simple Future is used when we plan or make a decision to do something. Nothing is said about the time in the future.I will eat./ I will sleep./ I will play.
The future continuous tense is used to express action at a particular moment in the future. However, the action willnot have finished at the moment./ I will be eating at 9 a.m./ I will be sleeping when you arrive./ I will be playing at 5 p.m.
Future Perfect expresses action that will occur in the future before another action in the future.I will have eaten before 10 a.m./ I will have slept before you arrive./ I will have played before 6 p.m.
Future Perfect Continuous is used to talk about an on-going action before some point in the future.I will have been sleeping for two hours when you arrive./ I will have been playing for an hour when it is 5 p.m.