1. Going to
Going to is not a tense. It is a special expression to talk about the future.
Structure of Going to
The structure is:
subject + be + going + infinitive
The verb be is conjugated (past, present or future).

2. Use of Going to
Going to - intention
We use going to when we have the intention to do something before we speak. We have already made a decision before speaking. Look at these examples:
Jo has won the lottery. He says he's going to buy a Porsche.
We're not going to paint our bedroom tomorrow.
When are you going to go on holiday?
In these examples, we had an intention or plan before speaking. The decision was made before speaking.

3. THE PRESENT CONTINUOUS TENSE
AFFIRMATIVE: Play I am ‘m
playing
You We
They
are
‘re He
She It is ‘s

4. VERB + ing (spelling rules)
listen + ing = listening
die (-iey) + ing = dying
write + ing = writing
hop + p + ing = hopping
travel + l + ing = travelling

5. The Present Continuous Tense is used for
Actions which are happening at or around the moment of speaking.
Now I’m doing the washing up.
She is working very hard nowadays.
Temporary situations.
I’m staying with a friend at the moment.

6. WHAT IS SHE DOING?
draw
She is drawing a picture at the moment

7. THE PRESENT CONTINUOUS TENSE
Is he playing football at the moment?
No, he isn’t. He is running.