Hospes veniens ianuam apertam videt.

The main verb is videt.

It is:

• 3rd person singular
• present tense
• active voice
• from vidēre = to see

So videt means he/she sees or the guest sees, depending on how you express it in English.

The subject is hospes.

Since videt is singular, we expect a singular subject, and hospes is nominative singular here.

A learner may notice that Latin usually does not need a separate word for he/she, because the verb ending already tells you the person and number. But when a noun like hospes is present, that noun is the subject.

Hospes is nominative singular, because it is the subject of the sentence.

This is one of those nouns where the nominative singular does not end in -us or -a, so it may not look familiar at first. It is a 3rd-declension noun.

Its forms include:

• nominative singular: hospes
• accusative singular: hospitem

So here hospes is not the object; it is the subject.

Veniens is a present active participle from venire = to come.

Here it describes hospes, so it means something like:

• coming
• as he/she comes
• who is coming

So hospes veniens means the coming guest or the guest as he/she comes.

A very natural way to understand it is as a noun plus a descriptive participle:

• guest, coming, sees...

In smoother English, we often turn this into a clause:

• The guest, as he comes, sees...
• The guest who is arriving sees...

Yes. Veniens agrees with hospes in:

• case
• number
• gender

Here it is nominative singular, matching hospes.

That agreement is how you know veniens belongs with hospes, not with ianuam.

Because it is the direct object of videt.

The verb videt answers the question sees what? Answer: ianuam = the door

So:

• hospes = subject
• videt = verb
• ianuam = direct object

The accusative singular form of ianua is ianuam.

Because apertam modifies ianuam, and adjectives in Latin agree with the nouns they describe.

So ianuam apertam means the open door, with both words in:

• accusative
• singular
• feminine

This agreement shows that apertam describes ianuam, not hospes.

Grammatically, apertam is the perfect passive participle of aperire = to open.

But in a sentence like this, it often functions very much like an ordinary adjective:

• open
• opened

So ianuam apertam is literally something like the opened door, but in normal English we usually say the open door.

This is very common in Latin: a participle can behave adjectivally.

No. The forms do not match.

• hospes is nominative singular
• apertam is accusative singular feminine

Since Latin relies heavily on agreement, apertam must go with a noun that is accusative singular feminine. That is ianuam.

So the grammar clearly tells you that the door is open, not the guest.

Yes, it could be different. Latin word order is much freer than English word order because endings show grammatical function.

This sentence places:

• the subject first: Hospes
• then a participle describing the subject: veniens
• then the object with its modifier: ianuam apertam
• and finally the verb: videt

That final placement of the verb is very common in Latin.

Other orders could still make sense, for example:

• Hospes ianuam apertam veniens videt
• Ianuam apertam hospes veniens videt
• Veniens hospes ianuam apertam videt

The meaning stays basically the same, though emphasis may shift.

The present participle usually suggests an action happening at the same time as the main verb, or at least in close connection with it.

So veniens most naturally means:

• coming
• while coming
• as he/she arrives

It does not usually mean after coming or having come. For that kind of idea, Latin would more naturally use a different form, such as a perfect participle or another construction.

So the guest is seen as in the act of coming/arriving when he/she sees the door.

It can mean either guest or host, depending on context.

That can surprise English speakers, because English separates those ideas into two different words. Latin hospes covers both sides of the guest-host relationship.

So in a sentence like this, context tells you which is meant. If the meaning has already been given to the learner, then that context has already settled it.

By itself, hospes can refer to either a male or a female person, depending on context.

In this sentence, veniens does not help much, because the nominative singular of this present participle is the same for masculine and feminine.

So unless context tells you otherwise, you should not force a gender in translation. English often solves this by using:

• the guest
• they
• or a context-based he/she

It certainly could. Latin often has a choice between:

• a participle
• and a relative clause

For example, instead of hospes veniens, Latin could use something like hospes qui venit in some contexts.

But participles are very common in Latin and often more compact. They let Latin pack descriptive information into fewer words.

So veniens is a very typical Latin way to say coming or who is coming.

Yes: it is a very common Latin pattern, noun + agreeing adjective/participle.

Here you have:

• ianuam = accusative singular feminine
• apertam = accusative singular feminine

A good habit for learners is to spot such pairs by matching endings and agreement rather than by relying only on word order.

That skill becomes especially useful in longer Latin sentences, where related words may be separated.