در کلاس، در همیشه بسته است و صندلی ها سبز هستند.

A careful pronunciation is:

dar kelâs, dar hamishe baste ast o sandali-hâ sabz hastand.

A few notes:

• در = dar
• کلاس = kelâs
• همیشه = hamishe
• بسته = baste
• صندلی‌ها = sandali-hâ
• سبز = sabz
• هستند = hastand

In normal speech, some sounds may get reduced a little.

No. In this sentence, the two در words have different meanings:

• first در = in / inside
• second در = door

So:

• در کلاس = in the classroom / in class
• در همیشه بسته است = the door is always closed

This is very common in Persian: the same written word can have different meanings, and context tells you which one is meant.

The comma helps separate the opening location phrase from the main statement:

• در کلاس، = In the classroom,
• در همیشه بسته است... = the door is always closed...

It makes the sentence easier to read, especially because در appears again right after it. Without the comma, a learner might momentarily get confused.

By itself, در کلاس in this sentence is understood as in the classroom / in class because the first در is functioning as a preposition.

If you wanted to say the classroom door, Persian would normally use ezafe:

• درِ کلاس = the classroom door

That little -e sound after در is important. In writing, it may be shown with a kasre or just understood from context.

So compare:

• در کلاس، در همیشه بسته است = In the classroom, the door is always closed
• درِ کلاس همیشه بسته است = The classroom door is always closed

Persian usually does not use a definite article like English the.

So Persian often says simply:

• در = door
• صندلی‌ها = chairs

and context tells you whether English should use the, a, or no article at all.

Here, English naturally uses the door and the chairs, but Persian does not need a separate word for the.

Yes, کلاس often means class. But depending on context, it can also refer to the classroom or the setting of the class.

In this sentence, because it goes with the door and the chairs, English naturally understands the physical room, so in the classroom is a good translation.

Depending on context, در کلاس can mean:

• in class
• in the classroom
• during class

همیشه means always.

In this sentence:

• در همیشه بسته است = the door is always closed

Persian adverbs like همیشه often come before the adjective or verbal part of the predicate. So the order feels natural in Persian.

Very literally, the structure is something like:

• door + always + closed + is

That is normal Persian word order.

بسته means closed here. It functions like an adjective.

So:

• بسته است = is closed

This is a very common Persian pattern:

• adjective + form of بودن
• literally: closed is
• natural English: is closed

So the sentence is not saying the door closes. It is describing the state of the door: the door is closed.

ها is a common plural marker in Persian.

So:

• صندلی = chair
• صندلی‌ها = chairs

In modern writing, it is often written attached with a half-space:

• صندلی‌ها

But learners will also sometimes see:

• صندلی ها

Both represent the same thing for learning purposes.

In Persian, adjectives usually do not change for singular vs. plural.

So:

• صندلی سبز است = the chair is green
• صندلی‌ها سبز هستند = the chairs are green

The adjective سبز stays سبز in both cases.

This is different from languages where adjectives have plural forms. Persian adjectives are much simpler in that respect.

هستند is the plural form of is/are.

So:

• است = is for singular
• هستند = are for plural

That is why the sentence has:

• در ... بسته است = the door ... is closed
• صندلی‌ها سبز هستند = the chairs are green

Yes, Persian can sometimes make this shorter, especially in less formal styles. For example:

• صندلی‌ها سبزند

This also means the chairs are green.

So سبز هستند and سبزند are both possible, with slight differences of style and formality.

و means and.

In careful pronunciation, it is often taught as va, but in normal connected speech it is very often pronounced more like o.

So in this sentence:

• ... بسته است و صندلی‌ها سبز هستند
• sounds like ... baste ast o sandali-hâ sabz hastand

That pronunciation is extremely common.

The sentence has three main parts:

1. در کلاس، = location phrase = In the classroom,
2. در همیشه بسته است = clause 1 = the door is always closed
3. و صندلی‌ها سبز هستند = clause 2 = and the chairs are green

So the overall pattern is:

• location + clause + and + clause

This is a very useful structure in Persian for describing places and what is true in them.