The concept of time can be split into:
I eat, I am eating
I ate, I was eating
I will eat, I will be eating
In the English language, tenses play an important role in sentence formation.
The tense of a verb shows the time of an event or action.
In Simple Present, the action is simply mentioned and there is nothing being said about its completeness.
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.
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 will not 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.