يعمل المسؤول في الهيئة.

• يعمل = he works / he is working
• المسؤول = the official, the person in charge, or sometimes the responsible person
• في = in / at
• الهيئة = the الهيئة, usually translated as the authority, the agency, the commission, or the organization, depending on context

So the sentence is literally: Works the official in the authority, but in natural English: The official works at/in the agency.

Because Arabic often uses verb–subject–object/complement order, especially in simple statements.

So:

• يعمل المسؤول في الهيئة = literally Works the official in the agency

This is completely normal in Arabic.

You can also say:

• المسؤول يعمل في الهيئة

This is also correct, but it starts with the subject instead. Both are possible in Modern Standard Arabic, though the emphasis can feel slightly different.

يعمل is:

• a present/imperfect tense verb
• third person masculine singular
• from the root ع م ل, which is related to work or doing

So يعمل means:

• he works
• he is working
• sometimes he does work, depending on context

Arabic present-tense forms often cover both simple present and present continuous in English.

The subject is المسؤول.

So in:

• يعمل = works
• المسؤول = the official

the full meaning is The official works.

Arabic does not need a separate word for he here, because the verb form يعمل already tells you the subject is he. Then المسؤول states explicitly who that he is.

Because Arabic does not use a separate present-tense verb to be the way English does.

In English, you might think of is working, but in Arabic:

• يعمل already carries the idea of works / is working

So you do not add a separate word meaning is here.

ال is the Arabic definite article, meaning the.

So:

• المسؤول = the official
• الهيئة = the authority/agency

Arabic uses ال much like English uses the. In this sentence, both nouns are definite.

في basically means in, but in English the best translation may be in or at, depending on context.

So:

• في الهيئة can mean in the agency
• or more naturally at the agency

Arabic often uses في in places where English might prefer at.

A rough pronunciation guide:

• يعمل = yaʿmalu
• المسؤول = al-masʾūl
• في = fī
• الهيئة = al-hayʾa

Two pronunciation points learners often notice:

1. ء (hamza)
   This is a glottal stop, a brief catch in the throat.
   It appears in:

   • المسؤول
   • الهيئة

2. ة (taa marbuuTa) at the end of الهيئة
   When pausing, it is usually pronounced like -a:

   • al-hayʾa
     In full grammatical reading, it can take case endings.

In fully vowelled Arabic, the sentence is:

• يَعْمَلُ الْمَسْؤُولُ فِي الْهَيْئَةِ

The endings are:

• يعملُ → -u because it is an indicative present-tense verb
• المسؤولُ → -u because it is the subject
• الهيئةِ → -i because it comes after the preposition في

In everyday printed Arabic, these short vowels are usually not written, so you normally see:

• يعمل المسؤول في الهيئة

Because it comes after the preposition في.

In Arabic, nouns after prepositions are normally genitive. So:

• في الهيئةِ

That is why the full ending is -i in careful vocalization.

Yes. المسؤول can mean several related things depending on context, such as:

• the official
• the person in charge
• the responsible person
• sometimes the manager or the official concerned

The root idea is connected to responsibility. So the best translation depends on the wider context.

It can mean either, depending on context.

So this sentence could mean:

• The official works at the agency
  if you are describing his job in general

or

• The official is working at the agency
  if you are describing what is happening now

Arabic present/imperfect verbs often cover both meanings unless something in the context makes one meaning clearer.

Yes, absolutely.

Both are correct:

• يعمل المسؤول في الهيئة
• المسؤول يعمل في الهيئة

The first is verb-first, which is very common in Arabic.

The second is subject-first, which can sound a bit more like The official, he works at the agency or simply place more focus on the official.

Both are good Modern Standard Arabic.

A simple way is:

• لا يعمل المسؤول في الهيئة
• The official does not work at the agency

Here, لا negates the present-tense verb يعمل.

So:

• يعمل = he works
• لا يعمل = he does not work

In this sentence, ال is pronounced clearly in both nouns:

• المسؤول → al-masʾūl
• الهيئة → al-hayʾa

That is because م and ه are moon letters, not sun letters. So the l sound of ال stays audible.

Compare this with a sun-letter word like الشمس, where the l is not pronounced separately.