Pater dicit tectum firmum esse.

Latin often does not use a separate word for that in this kind of sentence.

Instead, after verbs of saying, thinking, knowing, hearing, and so on, Latin commonly uses:

• an accusative noun as the subject of the reported statement
• plus an infinitive verb

This construction is called the accusative and infinitive construction, often shortened to ACI.

So where English says:

• Father says that the roof is strong

Latin says, more literally:

• Father says the roof to be strong

That is why there is no separate that.

Because the clause after dicit is an indirect statement.

In Latin, indirect statements normally use an infinitive, not a finite verb. So:

• direct statement: tectum firmum est = the roof is strong
• indirect statement after dicit: tectum firmum esse = that the roof is strong

So esse is used because Latin is not giving the statement directly; it is reporting it through dicit.

In an indirect statement, the subject of the infinitive goes into the accusative case.

Here, tectum is the subject of esse, not the direct object of dicit in the ordinary English sense.

So the structure is:

• pater = the main subject
• dicit = the main verb
• tectum ... esse = the reported statement
• tectum = the subject of esse, and therefore accusative

If this were a direct statement, you would expect nominative:

• tectum firmum est

But once it becomes indirect after dicit, tectum changes to the accusative:

• tectum firmum esse

Because firmum agrees with tectum.

Since tectum is:

• accusative
• singular
• neuter

the adjective describing it must also be:

• accusative
• singular
• neuter

So:

• tectum = accusative singular neuter
• firmum = accusative singular neuter

This agreement shows that firmum belongs with tectum and means strong describing roof.

Because of agreement.

• pater is masculine singular nominative
• tectum is neuter singular accusative
• firmum is neuter singular accusative

Since firmum matches tectum in gender, number, and case, it must describe tectum, not pater.

If Latin wanted to say that father was strong, the adjective would have to match pater, not tectum.

• pater is nominative singular and is the subject of the main verb
• dicit is third person singular present active indicative of dicere

So dicit means says or is saying, depending on context.

The main clause is therefore:

• pater dicit = father says

Everything after that is the content of what he says.

A very literal breakdown is:

• pater = father
• dicit = says
• tectum = the roof
• firmum = strong
• esse = to be

So the structure is roughly:

• Father says the roof strong to be

That sounds unnatural in English, but it reflects the normal Latin pattern for indirect statement.

A more natural grammatical explanation is:

• pater = subject of the main clause
• dicit = main verb
• tectum firmum esse = indirect statement, the roof to be strong

Yes. Latin word order is fairly flexible because the endings show the grammatical relationships.

So these could express the same basic idea:

• Pater dicit tectum firmum esse
• Pater tectum firmum esse dicit
• Tectum firmum esse pater dicit

The exact word order can change emphasis or style, but the grammar remains clear because of the case endings and the infinitive.

That said, the version you have is a perfectly normal and straightforward order for a learner.

The direct statement would be:

• tectum firmum est

That means the roof is strong.

When Latin turns that into an indirect statement after dicit, it changes in two important ways:

1. the subject tectum becomes accusative
2. the finite verb est becomes the infinitive esse

So:

• direct: tectum firmum est
• indirect: tectum firmum esse

Not always. Tectum can mean roof, but it can also mean house, building, or more generally covered structure, depending on context.

In this sentence, the intended meaning is already given to the learner, so the grammar point is more important than the vocabulary nuance. But it is useful to know that Latin words often have a range of meanings wider than one single English word.

Yes, very common.

After verbs like:

• dicit = says
• putat = thinks
• scit = knows
• audit = hears
• videt = sees

Latin very often uses the accusative and infinitive construction.

So learning this sentence is useful because it teaches a very important pattern:

• main verb of saying/thinking/etc.
• accusative subject
• infinitive verb

Once you understand Pater dicit tectum firmum esse, you are starting to understand one of the most frequent sentence patterns in Latin.