Va li này bị móp.

In Vietnamese, demonstratives like này (this) usually come after the noun.

So:

• va li này = this suitcase
• literally: suitcase this

This is the normal Vietnamese word order. English puts this before the noun, but Vietnamese usually puts này after it.

Compare:

• quyển sách này = this book
• cái bàn này = this table
• người này = this person

Bị often marks something negative, unwanted, or adverse happening to someone or something.

In Va li này bị móp, bị suggests that the suitcase has undergone an unfortunate change: it got dented / is dented.

A helpful way to think of it is:

• bị = to suffer / to be affected by something bad or undesirable

So the sentence is not just describing the suitcase; it also gives the feeling that this is an unwanted condition.

Other examples:

• Xe bị hỏng. = The vehicle broke down / is broken.
• Áo bị rách. = The shirt got torn / is torn.
• Anh ấy bị ốm. = He got sick / is sick.

Not exactly.

Bị is often used in sentences that English would translate with a passive, but it is not just a passive marker. It also usually adds a negative or unfavorable meaning.

For example:

• Va li này bị móp. = This suitcase is dented / got dented.
• Anh ấy bị mất ví. = He lost his wallet / His wallet was lost.

So while English might use a passive structure, Vietnamese is often expressing both:

1. that something happened to the subject, and
2. that it was bad or undesirable

Vietnamese also has được, which is often used for favorable situations:

• Tôi được khen. = I was praised.

So a useful contrast is:

• bị = affected in a bad way
• được = affected in a good way

Móp means dented in, caved in, or squashed inward.

It is commonly used for objects with a hard or semi-hard surface, such as:

• a suitcase
• a metal container
• a car body
• a helmet

It usually refers to a surface being pushed inward rather than simply being bent in any direction.

Related words:

• méo = bent out of shape, warped, misshapen
• hỏng = broken, damaged, not working
• vỡ = broken/shattered (for glass, ceramics, etc.)

So móp is more specific than just damaged.

Vietnamese often does not use a separate word corresponding to English is/are in sentences like this.

So:

• Va li này bị móp.

works naturally without any equivalent of is.

Vietnamese often links the subject directly to a description or state. In this sentence:

• Va li này = this suitcase
• bị móp = is dented / got dented

This is very normal in Vietnamese. English needs is, but Vietnamese often does not.

Yes, you can, but the nuance changes.

• Va li này móp. = This suitcase is dented.
• Va li này bị móp. = This suitcase got dented / is dented, with a stronger sense that this is an unfortunate result.

Without bị, the sentence is a more neutral description of the suitcase’s condition.

With bị, it sounds more like:

• something happened to it
• the result is undesirable

So both are possible, but bị adds an adverse, affected feeling.

Vietnamese classifiers are often used with nouns, but they are not always required in every sentence.

You could say:

• Cái va li này bị móp.

and that is also correct.

But in many everyday contexts, especially when the noun is already clear and specific, speakers may simply say:

• Va li này bị móp.

So:

• va li này = natural
• cái va li này = also natural, sometimes a bit more explicit or colloquial

Learners often expect a classifier every time, but Vietnamese is more flexible than that.

Both spellings can be seen:

• va li
• vali

Both refer to a suitcase. Va li comes from a foreign loanword and spelling can vary in practice.

In learning materials, dictionaries, and modern informal writing, you may encounter either form. The meaning is the same.

So these are essentially equivalent:

• Va li này bị móp.
• Vali này bị móp.

The structure is:

• Va li này = subject noun phrase
• bị móp = predicate

So the pattern is roughly:

• noun + demonstrative + bị + descriptive word

More literally:

• suitcase + this + affected by + dented

This is a very common Vietnamese pattern:

• Cửa này bị kẹt. = This door is stuck.
• Áo này bị rách. = This shirt is torn.
• Điện thoại này bị vỡ màn hình. = This phone has a cracked screen.

A rough pronunciation guide is:

• va li ≈ vah lee
• này ≈ nai with a falling tone
• bị ≈ bee with a heavy low tone
• móp ≈ mop with a rising/sharp tone

The tones matter a lot. In standard northern Vietnamese:

• này has a falling tone
• bị has a heavy low tone
• móp has a rising, sharp tone

If you leave out the tones, people may misunderstand you or need extra context.

Yes, it is natural and idiomatic.

A Vietnamese speaker would understand it immediately as a normal way to talk about a suitcase that has been dented.

Depending on the situation, you might also hear:

• Va li này móp rồi. = This suitcase is dented now / has gotten dented.
• Va li này bị móp méo. = This suitcase is dented and misshapen.
• Cái va li này bị móp. = This suitcase is dented.

So the original sentence is short, natural, and fully usable in real conversation.