The verb BE in the present tense (am, is, are, was, were) + verb -ING
There are some different situations we use present continuous tense.
(1) Activities happening right now!
What's going on at the moment you are speaking? These activities have begun but not finished yet.
"I am teaching you English right now."
"My brother is watching T.V."
(2) Activities that are in progress but are temporary
What's going on around this present time?
"I am studying English so I can be a flight attendant."
"My brother is reading the book, Harry Potter"
(3) Activities that will or will not happen in the near future
What is arranged or planned for the future?
"He is moving to a new apartment this weekend"
"I am visiting my grandparents tomorrow"
(4) Activities that happen again and again
"It's always raining in Seattle"
"Lee is always complaining"
**we add the word 'always' before the verb in these situations
Take a look at the image below, which situation is it? Number 1, 2, 3 or 4?