Present Perfect Simple 2 - Just, Already, Yet

The present perfect is often used with time expressions just, already and yet. These words show the relationship between a past action and now.

Just = a very short time ago

Just means that something happened only a moment ago, or just now. It connects a very recent past action with the present.

He has just left.
→ He left a very short time ago; he is probably not here now.
I have just eaten.
→ I ate recently, so I am not hungry now.

Already = before now

Already means that something happened before this moment, often earlier than expected.

I have already done it.
→ It is finished; you do not need to ask me again.
She has already met him.
→ The meeting happened before now.

Yet = until now / up to now

Yet is used when something is expected to happen but we do not know if it has happened. It usually appears in questions and negative sentences.

Have you watched it yet?
→ Is it done up to now?
I haven't seen it yet.
→ It has not happened until now, but I may see it later.

Position

just / already → between have/has and the past participle
She has already finished.
yet → usually at the end
Have you finished yet?

Quick reference

just → very recently
I've just arrived.
already → before now, often earlier than expected
I've already done it.
yet → until now; something expected but unfinished
I haven't done it yet.