I have some questions about English.

I have some questions about English.

Could you tell me how can you use these words or what the difference is between them?

Later on~ 'I bought a dress. Later on, (two days later) I realized it was the wrong size.' Maybe a couple of days or weeks later.

Right away As fast as possible. 'My computer has a virus! I need to get it fixed right away!'

After a while~ Same as 'later on.'

Some time later~ The same as 'later on' or 'after a while.' But maybe indicates a longer gap of time, like weeks or months or years.

As time went on~ Indicates a gradual process. 'As time went on, the tree grew taller and taller.'

Afterwards. After the events you just talked about. 'The teacher gave a very interesting lecture. Afterwards (after the lecture) he asked, 'Do you have any questions?'

He died yesterday,he had sick 2 years ago.

He died yesterday, he was sick 2 years ago.

He died yesterday. He had been sick for 2 years when he died. This is the only correct one, because it is the only one that indicates that he was sick when he died.

He fell into a coma 3 days ago. This is an event that happened 3 days ago.

He has been in a coma for 3 days. The coma started 3 days ago and has continued until now.

He had been into a coma since 3 days ago.

I don't have any money. Most natural, I think. Strengthens that you have absolutely NO money AT ALL.

I have no money. Grammatically correct, but weaker.

I have a little money. Positive. 'I have a little money, enough that I can go to the movies.'

I have little money. Negative. 'I have little money, so I can't go to the movies.'

I have much money. 'Much' is usually used in negative sentences, like 'I don't have much money.' For a positive sentence, use 'a lot of.'

I'm so broke. Very casual, and sounds like a teenager.

I'm completely broke. More grammatically correct.

If someone asks you "How is YOUR friend?" and "How is your FRIEND?". The part you emphasize is the part that has changed since the last sentence. For example: MY friend is okay. How is YOUR friend?' Also, 'How are YOU? and how is your FRIEND?'

What does the emphasis imply?