Tom komt als laatste binnen.

Because binnenkomen is a separable verb in Dutch.

The full verb is binnenkomen, meaning to come in / to enter. In a main clause, Dutch often splits separable verbs:

• Tom komt binnen. = Tom comes in.
• Ik kom binnen. = I come in.

So in Tom komt als laatste binnen, the verb is split into:

• komt = the conjugated part
• binnen = the separable prefix, which goes to the end

This is very common in Dutch:

• opstaan → Ik sta op
• meekomen → Hij komt mee
• aankomen → De trein komt aan

Als laatste means last or more literally as the last one.

So:

• Tom komt als laatste binnen. = Tom is the last one to come in.

It does not mean that Tom is behaving like a final person or pretending to be the last person. It is just a fixed way to say that, out of a group, Tom enters last.

Similar expressions:

• als eerste = first
• als tweede = second
• als derde = third

Examples:

• Zij spreekt als eerste. = She speaks first.
• Wij vertrekken als laatste. = We leave last.

Because the subject is Tom, which is third person singular.

The verb komen is conjugated like this in the present tense:

• ik kom
• jij komt
• hij/zij/het komt
• wij/jullie/zij komen

Since Tom = he, you use komt.

Because binnen belongs to the separable verb binnenkomen, and in a main clause that separable part usually goes to the end.

The sentence structure is roughly:

• Tom = subject
• komt = finite verb
• als laatste = adverbial phrase
• binnen = separable prefix at the end

So Dutch keeps binnen in final position, while als laatste goes before it.

Compare:

• Tom komt morgen binnen.
• Tom komt rustig binnen.
• Tom komt als laatste binnen.

In all of these, binnen stays at the end.

It depends on the grammar of the sentence.

The infinitive is one word:

• binnenkomen = to come in

But in a main clause, it is often split:

• Tom komt binnen.

So:

• dictionary form: binnenkomen
• finite main clause: komt ... binnen

This is normal for separable verbs in Dutch.

Yes, that is possible, but it usually sounds a bit less neutral than Tom komt als laatste binnen.

Both can be understood as:

• Tom comes in last.

However, Tom komt als laatste binnen is the more natural and common order if you want als laatste to describe how Tom enters in relation to others.

Dutch word order is flexible, but some orders sound more standard than others.

Usually it means Tom enters last, in the context of people coming into a room or place.

Because the verb is binnenkomen (to come in / enter), the focus is on the act of coming inside.

Depending on context, English might translate it as:

• Tom comes in last.
• Tom enters last.
• Tom is the last to come in.

If the context is a meeting, classroom, or party, it may also imply that he is the last person to arrive there, but the Dutch sentence itself specifically talks about coming in.

The sentence follows the normal Dutch main clause pattern where the conjugated verb comes second:

• Tom = subject
• komt = finite verb
• als laatste = extra information
• binnen = separated verb prefix

So the pattern is:

Subject + finite verb + other information + separable prefix

This is a very useful pattern to learn for Dutch main clauses.

Not in the same way.

• als laatste means as the last one / last
• het laatst often means most recently or appears in expressions about time

So:

• Tom komt als laatste binnen. = Tom comes in last.

But Tom komt het laatst binnen is less standard in this meaning and may sound odd to learners if used without the right context.

For ranking people in order, als eerste / als tweede / als laatste is the safest and most natural choice.

It is related, yes.

Binnen can mean inside / indoors, but in this sentence it is functioning as the separable part of binnenkomen.

Compare:

• Hij is binnen. = He is inside.
• Hij komt binnen. = He comes in.

So the word is the same in form, but its role is different:

• in Hij is binnen, it describes location
• in Hij komt binnen, it is part of the verb binnenkomen

In a subordinate clause, the separable verb is usually not split.

Main clause:

• Tom komt als laatste binnen.

Subordinate clause:

• ... omdat Tom als laatste binnenkomt.
• ... dat Tom als laatste binnenkomt.

So:

• main clause: komt ... binnen
• subordinate clause: binnenkomt

This is an important difference in Dutch word order.