هو يبقى في البيت.

In Modern Standard Arabic, يبقى means he remains or he stays.

In this sentence, it most naturally means something like:

• He stays in the house
• He remains in the house
• idiomatically, often He stays at home

The verb comes from بَقِيَ, meaning to remain / to stay / to continue to be left.

يبقى is in the imperfect form.

In Arabic, the imperfect can express several English ideas depending on context, including:

• present habitual: He stays at home
• present ongoing: He is staying at home
• general present: He remains at home

So the exact English tense depends on context, not just the verb form by itself.

Because Arabic verbs already show the subject, هو is not strictly necessary here.

So both of these are grammatical:

• هو يبقى في البيت
• يبقى في البيت

The pronoun هو is often added for one of these reasons:

• emphasis
• contrast
• clarity
• a more explicit topic + comment structure

So هو يبقى في البيت can feel a bit like:

• He, he stays at home
• As for him, he stays at home

But in many contexts, it is simply a clear, natural sentence.

In the imperfect, يـ often marks the third person masculine singular.

So:

• يبقى = he stays / he remains

This is part of the normal imperfect conjugation system in Arabic.

For this verb, the dictionary form is بَقِيَ, and the imperfect is يَبْقَى.

It is pronounced yabqā.

A few pronunciation notes:

• ya- as in yuh
• then bq together
• ق is qāf, a deeper, farther-back sound than English k
• the final ى gives a long ā sound

So the ending is -qā, not -qi and not -kay.

The final ى is called alif maqṣūra.

At the end of a word, it usually represents a long ā sound, not a y sound.

So:

• يبقى is pronounced yabqā
• not yabqi

This spelling is common in words whose root ends in a weak letter.

• في = in / at
• البيت = the house / the home

So في البيت literally means in the house.

But in natural English, it can often be translated as:

• at home

That is very common, because Arabic often uses the house where English prefers home.

Because الـ makes the noun definite:

• بيت = a house / house
• البيت = the house / the home

In this sentence, the definite form is used. Arabic often says في البيت in situations where English would simply say at home.

So the Arabic is definite, even if the best English translation may not use the.

Yes. After the preposition في, the noun is in the genitive case.

So in fully vocalized Arabic, it is:

• فِي الْبَيْتِ

with a final kasra on البيتِ.

However, in normal Arabic writing, short vowels are usually not written, so you normally just see:

• في البيت

Also, if you pause at the end of the sentence, that final short vowel is usually not pronounced.

It is grammatical, but it is not the only natural option.

Arabic often allows both:

• هو يبقى في البيت
• يبقى في البيت

Very roughly:

• verb first can feel more neutral in many formal contexts
• هو first can make the subject more explicit or slightly emphasized

So this sentence is fine, but learners should know that Arabic word order is more flexible than English word order.

Usually, not exactly.

يبقى mainly means:

• stays
• remains
• continues to be

If you want to say he lives in the house, Arabic more directly uses verbs like:

• يسكن
• يعيش

So هو يبقى في البيت suggests staying/remain­ing, not simply residing there as a permanent fact. The exact nuance depends on context.