A verb that refers to the present time is said to be in the present tense

The present tense can be divided into four forms:

1.Simple Present-I like

  Here the action is mentioned simply without anything being said about the completeness.

2.  Present continuous-I am liking 

Here action is incomplete and continuous.

3.Present Perfect-I have liked

Here action is mentioned as finished , complete or perfect

4.Present perfect continuous-I have been liking

Here the action is going on continuously and has not completed at this present moment.

4.Present perfect continuous-I have been liking

Here the action is going on continuously and has not completed at this present moment.