الغرفة المفردة هادئة.

In Arabic, the verb to be is usually not written or spoken in the present tense.

So:

• الغرفة المفردة هادئة literally looks like: the room single quiet but means: The single room is quiet.

This is called a nominal sentence in Arabic. The first part is the topic, and the second part gives information about it.

If you wanted past or future, Arabic would use a verb, for example with كان for was.

Because المفردة is an adjective describing the noun directly, while هادئة is the predicate of the sentence.

Here is the structure:

• الغرفة المفردة = the single room
• هادئة = quiet

In Arabic, an adjective that directly modifies a noun usually matches it in definiteness:

• الغرفة = the room (definite)
• المفردة = the single (also definite)

So المفردة must also have الـ.

But هادئة is not part of the noun phrase the single room. It is what is being said about that room, so it normally stays indefinite.

This is very common in Arabic:

• البيت كبير = The house is big
• السيارة سريعة = The car is fast

Because الغرفة is a feminine noun, and Arabic adjectives must agree with the noun they describe or refer to.

So:

• الغرفة = feminine
• المفردة = feminine adjective
• هادئة = feminine predicate adjective

This agreement is one of the most important features of Arabic grammar. Adjectives usually match the noun in:

• gender
• number
• definiteness
• often case as well in fully vocalized Arabic

A major clue is the ending ـة (called taa marbuuTa, ة), which very often marks feminine nouns.

So:

• غرفة = room
• ending in ـة → usually feminine

Because it is feminine, the adjectives also appear in feminine form:

• مفردة
• هادئة

Not every feminine noun ends in ـة, and not every word ending in ـة behaves simply in every situation, but it is a very strong and useful pattern.

Here, المفردة means something like:

• single
• single occupancy
• one-person

So الغرفة المفردة means the single room or the single-occupancy room.

Be aware that مفرد can have other meanings in other contexts, such as singular in grammar or individual/single more generally. The exact meaning depends on context.

الغرفة المفردة is one noun phrase:

• الغرفة = the room
• المفردة = the single

Together: the single room

Then هادئة is the part that completes the sentence:

• الغرفة المفردة = subject/topic
• هادئة = predicate/comment

So the sentence divides like this:

• [الغرفة المفردة] [هادئة]
• [The single room] [is quiet]

Yes. In full formal vocalization, it would typically be:

• الغرفةُ المفردةُ هادئةٌ

Those endings show grammatical case:

• الغرفةُ → nominative
• المفردةُ → nominative, matching the noun
• هادئةٌ → nominative predicate, indefinite

In normal everyday writing, these short vowels are usually omitted, so you normally see:

• الغرفة المفردة هادئة

The letter ة (taa marbuuTa) is pronounced differently depending on position and context.

At the end of a word in pause, it is usually pronounced like -a or -ah:

• غرفة ≈ ghurfa
• مفردة ≈ mufrada
• هادئة ≈ hādi’a / hādiʔa

But when the word is followed by a grammatical ending in careful reading, or in certain constructions, it can sound like t:

• غرفةٌ
• غرفةُ الطالبِ
• etc.

So in this sentence as normally paused speech, you usually hear the feminine ending as an a/ah sound, not a full t.

In Arabic, adjectives normally come after the noun they describe.

So:

• الغرفة المفردة = literally the room the-single
• natural English translation: the single room

This is the normal Arabic pattern:

• كتاب جديد = a new book
• البنت الجميلة = the beautiful girl
• البيت الكبير = the big house

So even though English usually puts adjectives before nouns, Arabic usually puts them after.

Yes, but the basic and most natural order here is:

• الغرفة المفردة هادئة

You may sometimes see Arabic change word order for emphasis or style, but for a simple learner sentence, this standard order is best.

The usual pattern is:

• noun phrase + predicate

So:

• الغرفة المفردة = the single room
• هادئة = quiet

That is the straightforward form you should learn first.

Yes, if you wanted the noun phrase to be indefinite, you would usually remove الـ from both the noun and its adjective:

• غرفة مفردة = a single room

Then the full sentence would be:

• غرفة مفردة هادئة or in full vocalization:
• غرفةٌ مفردةٌ هادئةٌ

The key point is that a noun and its adjective normally match in definiteness:

• الغرفة المفردة = the single room
• غرفة مفردة = a single room

In this sentence, هادئة is functioning like quiet in The room is quiet.

So although it is an adjective in form, its job here is predicative, not just attributive.

Compare:

• الغرفة الهادئة = the quiet room
  Here الهادئة directly describes the noun inside the noun phrase.

• الغرفة هادئة = the room is quiet
  Here هادئة is the predicate of the sentence.

That is why:

• الهادئة would be used in the quiet room
• هادئة is used in the room is quiet