Present continuous

We use the present continuous when we are in the middle of doing something. The action is not finish. Example:
- I'm teaching you English.

Sometimes the action isn't happening at the time of speaking. Example:
- I'm reading a amaizing book.

You can use the present continuous with some adverbs of time (today / this week / this year).

1. Affirmative form:

We form the present continuous with  am/is/are + the verb in infinitive form + ing. Example:
- I'm crying because my mother screamed me.
- She's playing a game now.

2. Negative form:

We build the negative form with am/is/are + not + infinitive verb + ing. Example:
- He isn't studying at the moment.
- It isn't raning today.

3. Question form:

We build the question form with am/is/are + person + infinitive verb + ing. Example:
- Are you enjoying the party?
- What's he studying?

NOTE: We can use the present continuous for temporary situations.