Tu tunicam calidam induere debes, quia ventus frigidus est.

Yes. In Latin, the verb ending in debes already tells you the subject is you (singular). So tu is not required.

Latin often leaves subject pronouns out unless the speaker wants to:

• add emphasis: you should put on a warm tunic
• make a contrast: you, not someone else
• make the subject extra clear

So Tu tunicam calidam induere debes and Tunicam calidam induere debes can both be correct, but the version with tu sounds a bit more explicit or emphatic.

Because tunicam is the accusative singular form, and it is the direct object of induere.

You are putting on the tunic, so tunicam is the thing being acted on.

• tunica = nominative singular, used for the subject
• tunicam = accusative singular, used for the direct object

So:

• tunica est calida = the tunic is warm
• tunicam induis = you put on the tunic

Because calidam has to agree with tunicam.

In Latin, adjectives agree with the nouns they describe in:

• gender
• number
• case

Here:

• tunicam = feminine, singular, accusative
• so the adjective must also be feminine, singular, accusative
• therefore: calidam

That is why you get tunicam calidam = a warm tunic

Induere is the present active infinitive of induō, induere, meaning to put on.

So by itself:

• induere = to put on

In this sentence it is used with debes:

• induere debes = you ought to put on / you must put on

This is a very common Latin pattern:

• a finite verb like debes
• plus an infinitive like induere

Debes is the 2nd person singular present active indicative of debeō, debēre.

Here it means you ought or you must.

When debeō is followed by an infinitive, it expresses obligation or necessity:

• debes induere = you ought to put on
• debet venire = he ought to come
• debemus laborare = we must work

So the structure is:

• tu = you
• tunicam calidam = a warm tunic
• induere = to put on
• debes = you should / must

Because after debeō, Latin normally uses an infinitive to say what someone ought or must do.

This is similar to English:

• you must go
• you should study
• you ought to listen

In Latin:

• debes ire = you must go
• debes studere = you should study
• debes audire = you ought to listen

So debes needs the action in infinitive form, and here that action is induere.

Quia means because and introduces the reason:

• quia ventus frigidus est = because the wind is cold

It introduces a subordinate clause, just like English because does.

A learner should notice that after quia, Latin uses a normal clause with its own subject and verb:

• ventus = wind
• frigidus = cold
• est = is

So the second half of the sentence is simply giving the reason for the first half.

Because ventus is the subject, and frigidus is a predicate adjective describing the subject after est.

In Latin, predicate adjectives agree with the subject, so both are nominative:

• ventus = nominative singular masculine
• frigidus = nominative singular masculine
• est = is

This works like:

• puer laetus est = the boy is happy
• puella laeta est = the girl is happy
• ventus frigidus est = the wind is cold

Yes, it can go before. Latin word order is much more flexible than English.

So all of these are possible:

• tunicam calidam
• calidam tunicam
• ventus frigidus
• frigidus ventus

The endings show which words belong together, so Latin does not rely as heavily on word order as English does.

That said, different word orders can create different emphasis or style. In a simple sentence like this, tunicam calidam and ventus frigidus are just straightforward, natural arrangements.

Yes. That would still be correct.

Latin word order is flexible, so these are all possible:

• Tu tunicam calidam induere debes
• Tu tunicam calidam debes induere
• Tunicam calidam induere debes
• Tunicam calidam debes induere

The basic meaning stays the same because the endings show the grammar. The choice of order mostly affects emphasis and style.

Strictly speaking, induere most naturally means to put on.

So this sentence most literally means:

• You should put on a warm tunic, because the wind is cold.

In English, depending on context, people might also translate it more loosely as wear a warm tunic, but the Latin verb itself suggests the action of putting the clothing on.

Sometimes Latin can omit a form of sum (to be) when the meaning is obvious, especially in poetry or very compressed style. But in ordinary prose, est is normally expressed.

So:

• ventus frigidus est is the standard full form

A learner should usually keep est in sentences like this unless there is a special stylistic reason not to.

Here is a quick breakdown:

• tu: nominative singular, 2nd person pronoun
• tunicam: accusative singular feminine
• calidam: accusative singular feminine, agreeing with tunicam
• induere: present active infinitive
• debes: 2nd person singular present active indicative
• quia: conjunction
• ventus: nominative singular masculine
• frigidus: nominative singular masculine, agreeing with ventus
• est: 3rd person singular present indicative of sum

This is a good sentence for seeing two important agreement patterns:

• noun + adjective in the accusative: tunicam calidam
• subject + predicate adjective in the nominative: ventus frigidus est