Present perfect, and why it is not the past simple

This is the tense most learners get wrong for longest, because many languages have a form that looks identical and is used differently.

The present perfect is a present tense. It is about the situation now. The past simple is about a finished moment then.

The form

have / has plus the past participle.

```

I have finished.

She has gone.

They have not arrived.

Have you seen it?

```

Three uses

1. Life experience, with no specific time.

```

I have been to Japan. (at some point in my life)

She has never eaten sushi.

Have you ever driven a truck?

```

2. Something that started in the past and is still true.

```

I have lived here for ten years. (and I still live here)

She has worked here since 2019. (and she still works here)

```

3. A past action with a result that matters now.

```

I have lost my keys. (so I cannot get in, right now)

He has broken his leg. (so he cannot walk, right now)

```

The rule that decides it

A finished time expression forces the past simple.

```

✓ I have been to Japan.

✗ I have been to Japan last year.

✓ I went to Japan last year.

```

Last year, yesterday, in 2019, two days ago, when I was a child are all finished. They cannot take the present perfect.

Compare:

```

I have lost my keys. (they are still lost)

I lost my keys yesterday. (a finished event; maybe I found them)

```

for and since

for plus a length of time. since plus a starting point.

```

for two years, for a long time, for ten minutes

since 2019, since Monday, since I was ten, since this morning

```

been and gone

```

She has been to Paris. (she went and came back)

She has gone to Paris. (she is there now)

```

already, yet, just, still

• already: sooner than expected. I have already finished.
• yet: in questions and negatives, at the end. Have you finished yet? I haven't finished yet.
• just: a moment ago. I have just arrived.
• still: continuing, and often with impatience. I still haven't heard back.

Present perfect continuous

have been plus -ing. It emphasises the activity and its duration rather than the result.

```

I have been waiting for an hour. (the waiting is the point)

I have written three emails. (the result is the point)

```

State verbs stay in the simple form here too:

```

✗ I have been knowing her for years.

✓ I have known her for years.

```