Jag kan ha glömt bilagan på skrivaren.

In this sentence, kan is not mainly about ability. It expresses possibility or a guess about the past.

So:

• kan ha glömt = may have forgotten / might have forgotten
• not usually literal English can have forgotten

This is a very common Swedish pattern:

• Jag kan ha fel. = I may be wrong.
• Hon kan ha gått hem. = She may have gone home.

So Jag kan ha glömt bilagan på skrivaren means the speaker is not sure, but thinks it is possible.

Because after ha in Swedish, you normally use the supine form of the verb.

For glömma:

• infinitive: glömma
• present: glömmer
• past: glömde
• supine: glömt

So:

• Jag glömde bilagan. = I forgot the attachment.
• Jag har glömt bilagan. = I have forgotten the attachment.
• Jag kan ha glömt bilagan. = I may have forgotten the attachment.

Here, glömt is the correct form because it follows ha.

Because kan is a modal verb, and modal verbs in Swedish are followed by the bare infinitive.

So you say:

• Jag kan ha glömt
• Hon vill gå
• Vi måste åka

Not:

• Jag kan att ha glömt

This is similar to English:

• I can go
• not I can to go

Bilagan is the definite singular form of bilaga.

The noun is:

• en bilaga = an attachment / an appendix / an enclosure
• bilagan = the attachment / the appendix / the enclosure

In Swedish, the definite article is often added as a suffix to the noun instead of being a separate word.

So:

• en bok = a book
• boken = the book

and

• en bilaga = an attachment
• bilagan = the attachment

For the same reason as bilagan: skrivaren is the definite singular form.

• en skrivare = a printer
• skrivaren = the printer

So på skrivaren means on the printer or at the printer, referring to a specific printer that speaker and listener can identify.

If it were not specific, you could say:

• på en skrivare = on a printer

Usually yes, but in real usage it can be a bit broader than literal English on.

In this sentence, på skrivaren often means something like:

• left on top of the printer
• left at the printer
• left by the printer

Swedish often uses på with places, surfaces, and equipment in ways that do not always match English exactly.

Important contrast:

• på skrivaren = on/at the printer
• i skrivaren = in the printer

So if the attachment is physically inside the machine, i skrivaren would be more literal.

The sentence is built like this:

• Jag = subject
• kan = finite verb
• ha glömt = verb phrase
• bilagan = object
• på skrivaren = adverbial phrase of place

So:

Jag | kan | ha glömt | bilagan | på skrivaren

This follows normal Swedish main-clause word order, where the finite verb comes early in the sentence.

Yes. Swedish is a V2 language, which means the finite verb normally comes in the second position in main clauses.

In the original sentence:

• Jag is first
• kan is second

If you move another element to the front, the verb still stays second:

• På skrivaren kan jag ha glömt bilagan.

That is very Swedish: whatever comes first, the finite verb still takes second position in a main clause.

Yes, and it is natural Swedish, but the nuance is a little different.

• Jag kan ha glömt bilagan på skrivaren = I may have forgotten the attachment on the printer.
• Jag har kanske glömt bilagan på skrivaren = I have perhaps forgotten the attachment on the printer.

Both express uncertainty, but kan ha glömt sounds a bit more like a deduction or possibility, while kanske simply adds maybe/perhaps.

The negation inte normally comes after the finite verb and before the rest of the verb phrase.

So:

• Jag kan inte ha glömt bilagan på skrivaren. = I can’t have forgotten the attachment on the printer.

Pattern:

• subject + finite verb + inte
  • infinitive/perfect infinitive

Examples:

• Jag kan inte komma. = I can’t come.
• Hon kan inte ha gått hem än. = She can’t have gone home yet.

The dictionary form is glömma, which means to forget.

Common forms are:

• glömma = to forget
• glömmer = forgets / am forgetting
• glömde = forgot
• glömt = forgotten

So when you look up glömt, you should search for glömma.

Yes. Bilaga can mean different kinds of attached material, depending on the situation.

Common meanings include:

• an email attachment
• an appendix in a document
• an enclosure sent with a letter
• a supporting document

So the exact English word depends on context. Grammatically, though, the sentence works the same way no matter which meaning is intended.