أسمع ضجيجا غريبا.

A careful fully vowelled pronunciation would be:

أَسْمَعُ ضَجِيجًا غَرِيبًا

A rough English-style transliteration is:

asmaʿu ḍajījan gharīban

A few pronunciation notes:

• أسمع = as-maʿu
  • The final letter ع is a consonant English does not have. It is a deep throat sound.
• ض in ضجيج is an emphatic d-like sound.
• غ in غريب is like a French/German r sound for many learners, produced in the back of the throat.
• The endings -an on ضجيجًا and غريبًا are important in careful Modern Standard Arabic pronunciation.

Because Arabic verbs already show the subject.

أسمع by itself means I hear / I am hearing.
So the subject أنا is already built into the verb form.

You can say:

أنا أسمع ضجيجًا غريبًا

but that usually adds emphasis, like:

• I hear a strange noise.
• As for me, I hear a strange noise.

In neutral Arabic, leaving out أنا is completely normal.

أسمع is the present/imperfect form of the verb from the root س-م-ع, related to hearing.

Here it means:

• I hear
• I am hearing

In Modern Standard Arabic, the present tense often covers both simple present and present progressive, depending on context.

So أسمع ضجيجًا غريبًا can mean either:

• I hear a strange noise
• I’m hearing a strange noise

Because they are both in the accusative indefinite form.

Here is what is happening:

• ضجيجًا is the direct object of أسمع
  • You hear what? → ضجيجًا
• غريبًا is the adjective describing ضجيجًا
  • So it matches the noun in case and indefiniteness

That final -an is called tanwīn fatḥ.

So:

• ضجيجٌ = a noise (subject form / nominative)
• ضجيجًا = a noise (object form / accusative)

And since غريب describes ضجيج, it becomes:

• غريبًا

Because in Arabic, adjectives normally come after the noun they describe.

So:

• ضجيجٌ غريبٌ = a strange noise

This is the normal Arabic order:

• noun + adjective

That is different from English, where we usually say:

• adjective + noun
• strange noise

Arabic adjectives agree with the nouns they describe.

That means غريبًا matches ضجيجًا in:

• case: both are accusative
• definiteness: both are indefinite
• gender: both are masculine
• number: both are singular

So Arabic is very strict about adjective agreement.

Compare:

• ضجيجٌ غريبٌ = a strange noise
• الضجيجُ الغريبُ = the strange noise
• ضجيجًا غريبًا = a strange noise (as an object)

Because the sentence means a strange noise, not the strange noise.

Without ال, the noun is indefinite:

• ضجيجًا غريبًا = a strange noise

With ال, it would become definite:

• الضجيجَ الغريبَ = the strange noise

So the sentence changes like this:

• أسمع ضجيجًا غريبًا = I hear a strange noise
• أسمع الضجيجَ الغريبَ = I hear the strange noise

The root is س م ع.

This root has to do with hearing and listening. Some related words are:

• سَمِعَ = he heard
• يَسْمَعُ = he hears / is hearing
• أَسْمَعُ = I hear / am hearing
• سَمْع = hearing
• مَسْمُوع = heard / audible

So learning the root helps connect many related words.

Not exactly.

أسمع usually means I hear.

If you want I listen, Arabic often uses:

أستمع إلى ...

For example:

• أسمع صوتًا = I hear a sound
• أستمع إلى الموسيقى = I listen to music

So:

• hear = يسمع / أسمع
• listen to = يستمع إلى / أستمع إلى

This is a very common distinction for English-speaking learners.

Yes, but the given order is the most neutral and natural:

أسمع ضجيجًا غريبًا

You can also say:

أنا أسمع ضجيجًا غريبًا

if you want to emphasize I.

Because Arabic case endings help show grammatical roles, word order can sometimes be more flexible than in English. But for learners, the safest standard pattern is:

• verb + object
• noun + adjective

So this sentence is a very good basic model.

That is the normal spelling of many indefinite accusative nouns in Arabic.

The ending -an (tanwīn fatḥ) is often written with an extra alif:

• ضجيجًا

This extra ا is mostly a spelling convention. It helps represent the accusative tanwīn.

So you will often see:

• كتابًا
• رجلًا
• ضجيجًا

But there are some spelling exceptions in Arabic, so this is something learners get used to gradually.

The fully vowelled version is:

أَسْمَعُ ضَجِيجًا غَرِيبًا

In very careful Modern Standard Arabic, especially in reading, news, formal speech, or grammar study, those endings are pronounced.

In less formal spoken use, many final case endings are reduced or dropped, depending on style and context.

So as a learner:

• It is good to learn the full forms
• It is also good to recognize that real usage may be less fully pronounced

For grammar study, though, the endings here matter because they show:

• the verb form
• the object
• adjective agreement