THE USES of “still”, “already” and “yet”

A. STILL:

1) Use:

‘Still’ is used to talk about something, a situation or an ongoing action, that’s continuing, often for a longer time than expected. The action hasn’t changed or stopped.

2) Position:

‘Still’ is usually placed in the middle of the sentence, before the verb.
Example: Are you still working for the same company?

B. Already:

1) Use:

we use ‘already’ to talk about things that have happened, often earlier than expected.

2) Position:

It is usually placed in the middle of the sentence, just before the verb.

Example: She has already invited them.

C. YET:

1) Use:

We use ‘yet’ mostly in questions and negative sentences. Using ‘yet’ shows that we’re expecting something to happen.

2) Position:

In spoken English ‘yet’ almost always comes at the end of the sentence or question.
Example: I haven’t met them yet.