Māter puellam monet ut ante lārārium taceat et flōrēs rēctē pōnat.

Because puellam is the direct object of monet. The mother is doing the warning/advising, and the girl is the person being warned/advised.

So:

• Māter = nominative singular, the subject
• puellam = accusative singular, the direct object

Even though the girl is also the one who will do the actions in the ut clause, in the main clause she is still grammatically the object of monet.

Monet is:

• 3rd person singular
• present tense
• active voice
• indicative mood

It comes from moneō, monēre.

Depending on context, moneō can mean warn, advise, remind, or admonish. In this sentence, with an ut clause after it, warns or advises fits well.

After verbs like advise, warn, urge, persuade, or command, Latin often uses ut plus the subjunctive to introduce what someone is told to do.

So monet ut ... means something like:

• warns/advises that ...
• or more naturally in English, warns/advises her to ...

This is a very common Latin pattern.

They are subjunctive because they are inside the ut clause after monet. This kind of clause is often called an indirect command or substantive clause of exhortation/advice.

So:

• taceat = present subjunctive of taceō
• pōnat = present subjunctive of pōnō

They are not stating facts. They express what the mother wants the girl to do.

The subject is the girl, even though Latin does not state it explicitly.

Latin often leaves out subject pronouns when the meaning is clear from context. Here, the person being advised in puellam monet is understood to be the one who should:

• taceat = be silent
• pōnat = place the flowers

So the sense is Mother advises the girl that she should...

Yes. There is one ut clause, and et joins the two verbs inside it.

Structure:

• ut ante lārārium taceat
• et flōrēs rēctē pōnat

So the mother advises the girl to do two things:

• be silent before the shrine
• place the flowers properly

Both verbs depend on the same ut.

Ante is a preposition that takes the accusative case. So lārārium here is accusative singular.

• ante = before, in front of
• lārārium = household shrine

So ante lārārium means before/in front of the household shrine.

A lārārium is a household shrine in a Roman home. It was a place for honoring the Lares and other household gods.

This is a cultural word, not just a grammar point, so it is useful to remember that it refers to a specifically Roman religious setting.

Rēctē is an adverb meaning properly, correctly, or in the right way.

It modifies pōnat, so it tells us how the flowers should be placed:

• flōrēs rēctē pōnat = place the flowers properly

Latin word order is much more flexible than English word order because Latin uses case endings to show grammatical function.

The basic structure is:

• Māter puellam monet
• ut ante lārārium taceat et flōrēs rēctē pōnat

English depends heavily on word order to show subject and object, but Latin can move words around more freely for emphasis, rhythm, or style. Here, words are placed near the ideas they belong with:

• ante lārārium near taceat
• rēctē near pōnat