present continuous

Question 1

I am doing something =

Answer 1

I started doing it and I haven’t finished; I’m in the middle of doing it.
(Let’s go out now. It isn’t raining any more.)

Question 2

Steve is talking to a friend on the phone. He says:
I’m reading a really good book at the moment.
It’s about a man who …

what does the above sentences mean?

Answer 2

Sometimes the action is not happening at the time of speaking.

Question 3

You can use the present continuous with:

Answer 3

today/ this week/ this year etc.(periods around now)

Question 4

We use the present continuous when we talk about (…). We often use
these verbs in this way: (….)

Answer 4

a change that has started to happen.

getting, becoming changing, improving
starting, beginning increasing, rising, falling, growing