Never, never, never use "Gonna" or "Wanna"

I have noticed a number of international students using "gonna" instead of the correct "going to" and "wanna" instead of the correct "want to"!

There are no such words in English as "gonna" or "wanna". They do NOT exist: they are slang. It is a lazy way of saying or writing "going to" and "want to".

The correct use is seen in the following examples below:

I am going to bake a cake.

I want to go to the concert.

I am going to a football match.

I am going to see my friend tomorrow.

We want to buy a new television.

We are going to visit London.

They are going to the bank.