يجرب الزبون الملابس.

Because verb–subject–object order is very common in Modern Standard Arabic.

So يجرب الزبون الملابس is a very natural Arabic sentence structure:

• يجرب = the verb
• الزبون = the subject
• الملابس = the object

Arabic can also use subject–verb–object order:

• الزبون يجرب الملابس

Both are correct. The verb-first version often sounds a bit more neutral or narrative in MSA.

Yes. That is also correct.

Compare:

• يجرب الزبون الملابس = verb-first
• الزبون يجرب الملابس = subject-first

Both mean the same basic thing. The difference is mostly one of word order and emphasis:

• يجرب الزبون الملابس can sound more like standard written/narrative Arabic.
• الزبون يجرب الملابس may put slightly more focus on the customer.

يجرب comes from the root ج ر ب and means he tries or he tests.

In this sentence, with clothes as the object, it naturally means:

• he tries on
• he is trying on

Arabic often does not need a separate word for English on in expressions like try on clothes. The verb يجرب can take the clothing directly as its object.

The يـ is part of the present/imperfect verb conjugation.

In يجرب, it marks:

• third person
• masculine
• singular

So يجرب means:

• he tries
• he is trying

If the subject were she, the verb would be:

• تجرب

Because the verb agrees with the subject, not the object.

Here:

• الزبون = the subject = singular masculine
• الملابس = the object = plural

So the verb is singular masculine:

• يجرب

The plurality of الملابس does not affect the verb here.

Because Arabic expresses this idea differently from English.

In English, you say:

• try on the clothes

In Arabic, the verb جرّب / يجرب can directly take clothes as its object:

• يجرب الملابس

So Arabic does not need a separate preposition here. This is just a normal difference between the two languages.

الـ is the definite article, meaning the.

So:

• الزبون = the customer
• الملابس = the clothes

Arabic uses definiteness much like English, but sometimes a bit more broadly depending on context. In this sentence, both nouns are definite, so the sentence refers to a specific customer and specific clothes, or at least to them as identifiable in context.

الملابس means clothes and is a plural noun.

A related singular form is:

• مَلْبَس = garment / item of clothing

But in everyday use, ملابس is the normal word for clothes as a general plural/collective idea.

Another common word you may also see is:

• ثياب = clothes / garments

Yes, in fully vocalized formal Arabic there are case endings, even though they are usually not written in ordinary text.

Fully vocalized, the sentence would be:

• يُجَرِّبُ الزَّبُونُ المَلَابِسَ

The endings are:

• يجربُ = nominative/indicative verb ending
• الزبونُ = subject, so nominative
• الملابسَ = direct object, so accusative

In normal writing, these short vowel endings are usually omitted:

• يجرب الزبون الملابس

In careful MSA pronunciation, it is approximately:

• yu-jarribu

More exactly:

• يُ = yu
• جَرِّ = jarri
• بُ = bu

A few pronunciation notes:

• The ج in standard MSA is usually pronounced like j in job.
• The middle consonant is doubled here, so جرّب has a stronger r sound than a simple single r.

It can mean both, depending on context.

Arabic imperfect verbs often cover several English meanings, such as:

• he tries
• he is trying
• he does try

So يجرب الزبون الملابس could mean:

• The customer tries on the clothes or
• The customer is trying on the clothes

Context tells you which is intended.

It is a Form II verb: جرّب in the past tense.

That matters because Form II often gives a meaning like:

• causing
• intensifying
• making something more deliberate or repeated

For this root, جرّب means to try, to test, to experiment with.

Its basic conjugation here is:

• past: جرّبَ = he tried
• present: يجرّبُ = he tries / is trying

Yes, depending on context.

For example:

• العميل = the client/customer
• المشتري = the buyer/purchaser

But الزبون is a very common and natural word for customer, especially in shopping contexts. Since the object is clothes, الزبون fits very well.