The present simple is used to talk about states and habits. There are some irregular verbs, such as ‘to be’ and ‘to have’, but in general, to form it, use the root form of the verb, without ‘to’. For the third person singular (he, she, it), remember to add ‘s’:
Note: the present simple is also used to talk about future events, on a timetable or programme of events.
The present continuous is used to talk about actions that are in progress at the moment of speaking or situations that are temporary. To form it, use the present simple of the verb ‘to be’ and add ‘ing’ to the verb:
Note: the present continuous is also used to talk about definite future arrangements, when the time reference is given or understood.
Verbs such as BELIEVE, OWN BELONG, LIKE, UNDERSTAND, KNOW, HEAR are not usually used in the continuous form because they describe states, not actions.
Some verbs can be used in both the simple and continuous form with different meanings: