Hver sem er getur komið í kvöld.

As a whole, hver sem er means anyone / anybody.

Word-for-word, it is something like whoever it is, but in natural English the best translation in this sentence is simply anyone.

This is a very common Icelandic pattern:

• hver sem er = anyone
• hvað sem er = anything
• hvar sem er = anywhere

Here sem is part of a pattern that turns a question word into a more general meaning like whoever or anyone.

Compare:

• Hver getur komið í kvöld? = Who can come tonight?
• Hver sem er getur komið í kvöld. = Anyone can come tonight.

So sem helps change hver from plain who? into the idea whoever / anyone.

Yes, there are two verb forms on the surface, but er belongs to the fixed expression hver sem er.

• er is the present-tense form of vera = to be
• hver sem er literally feels a bit like whoever it is

In practice, though, learners should usually recognize hver sem er as one unit meaning anyone.

The main verb of the sentence is getur = can / is able to.

Because hver sem er is the subject of the sentence, so it is in the nominative case.

In this sentence, anyone is the one doing the action of being able to come, so nominative is the right form.

In other roles, the phrase can change:

• nominative: hver sem er
• accusative: hvern sem er
• dative: hverjum sem er
• genitive: hvers sem er

After geta, Icelandic normally uses the supine form, often called sagnbót, rather than the basic infinitive.

For koma, that form is komið.

So:

• geta komið = can come
• hefur komið = has come

This often surprises English speakers, because komið may look like a past participle they have seen elsewhere, but after geta it is the expected form.

No.

The tense of the sentence comes from getur, which is present tense. So the meaning is present or near-future:

Anyone can come tonight.

Even though komið looks like a form learners may associate with the perfect, it does not make this sentence past.

Í kvöld means tonight or this evening.

It is a common time expression in Icelandic, and it is best learned as a set phrase. Even though í often means in, the whole phrase í kvöld is the normal way to say tonight.

Yes, this is a normal, neutral Icelandic sentence.

Its basic structure is:

• Hver sem er = subject
• getur = finite verb
• komið = verb form used with getur
• í kvöld = time expression

So the sentence follows a straightforward pattern: Subject + verb + complement + time expression

Sometimes, yes, but in this sentence anyone is more natural English.

English whoever often introduces a fuller clause, for example:

• Whoever wants to come can come.

But Hver sem er getur komið í kvöld is most naturally translated as:

• Anyone can come tonight.

Yes. This is a very useful Icelandic pattern.

Some common examples are:

• hver sem er = anyone
• hvað sem er = anything
• hvar sem er = anywhere
• hvenær sem er = anytime
• hvernig sem er = in any way / however

So if you learn hver sem er, you are also learning a broader pattern that appears often in Icelandic.