يخلي الفريق المبنى تماما.

In MSA here, it is best read as يُخْلي from the verb أخلى.

That verb usually means to vacate, evacuate, clear out, or leave empty.

It is not the same as the common dialect verb يخلّي with a shadda, which often means to let, allow, or make someone do something. In normal Arabic spelling, both can look similar because short vowels and shadda are often omitted, so context is important.

Because Arabic often uses verb–subject–object order.

So:

• يُخْلي الفريقُ المبنى = literally vacates the team the building
• natural English = the team vacates the building

If you put the subject first, that is also possible:

• الفريقُ يُخْلي المبنى

That version can sound a bit more emphatic about the team.

In fully vowelled MSA, it would be:

• يُخْلي الفريقُ المبنى تمامًا

The ending ـُ on الفريقُ marks it as nominative, which is the usual case for the subject.

So الفريقُ = the subject
and المبنى = the direct object.

In everyday writing, those short vowels are usually not written, so learners often have to rely on grammar and context.

Because المبنى ends in ى (alif maqṣūra).

With this kind of noun, the case ending is not shown in the usual visible way. So even when المبنى is the direct object, it still looks like المبنى in normal writing.

That is very common in Arabic and can be confusing at first.

It is pronounced al-mabnā.

The final ى is called alif maqṣūra, and here it gives a final long ā sound.

So:

• المبنى = al-mabnā = the building

This is different from مبنيّ (mabniyy), which can mean built or based on.

Because أخلى / يُخْلي can take a direct object.

So Arabic can say:

• يُخْلي المبنى = vacates the building

The building is the thing being emptied or cleared out, so no preposition is necessary.

If you use another verb or another structure, you might see من, but with يُخْلي a direct object is normal.

تمامًا means completely, entirely, totally.

It adds emphasis and tells you that the action is complete:

• يُخْلي الفريقُ المبنى = the team vacates the building
• يُخْلي الفريقُ المبنى تمامًا = the team vacates the building completely

Grammatically, تمامًا is being used adverbially, which is why it appears in the accusative form.

Not exactly.

• يغادر = leaves / departs from
• يُخْلي = vacates / clears out / evacuates

So يُخْلي المبنى often suggests that the place is being emptied, not just that someone goes out of it.

If the meaning is simply the team leaves the building, then يغادر الفريقُ المبنى may be the more neutral choice.

It is the imperfect form.

In MSA, the imperfect can express several meanings depending on context, such as:

• present: the team vacates / is vacating
• future: the team will vacate
• sometimes habitual meaning: the team regularly vacates

So the exact English tense depends on the surrounding context.

Yes, potentially.

Without full vowel marks, يخلي can be read in more than one way, and the roles of words can sometimes be unclear until context helps.

For a learner, the intended MSA reading here is:

• يُخْلي الفريقُ المبنى تمامًا

So if you are studying it as an MSA sentence, that is the safest grammatical reading.

A natural fully vowelled version is:

• يُخْلي الفريقُ المبنى تمامًا

A helpful pronunciation guide is:

• yukhlī al-farīqu al-mabnā tamāman

Word by word:

• يُخْلي = yukhlī
• الفريقُ = al-farīqu
• المبنى = al-mabnā
• تمامًا = tamāman