Đây là thẻ ngân hàng của tôi.

Đây là is the standard way to say this is when you are identifying something.

• đây = this / here
• là = the linking verb, similar to is in sentences like This is my card

So Đây là thẻ ngân hàng của tôi literally works like:

• Đây là = This is
• thẻ ngân hàng của tôi = my bank card

Without là, the sentence would sound incomplete in normal speech.

Vietnamese often puts the main noun first and the describing noun after it.

So:

• thẻ = card
• ngân hàng = bank

Together, thẻ ngân hàng literally looks like card bank, but it means bank card.

This is very common in Vietnamese. The general pattern is often:

• main thing + type/category/describer

So English and Vietnamese often build noun phrases in opposite directions.

In Vietnamese, possession usually comes after the thing being possessed.

So:

• thẻ ngân hàng của tôi = my bank card
• literally: bank card of me

Here:

• của = possession marker, like of
• tôi = I / me, but in this structure it means my

This is one of the most important word-order differences from English.

Yes, in this sentence tôi is the normal pronoun for I / me, and with của, it gives the meaning my:

• của tôi = my / mine

Vietnamese does not have a separate possessive form like English my. Instead, it often uses:

• của + pronoun

Examples:

• của tôi = my/mine
• của bạn = your/yours
• của anh ấy = his
• của cô ấy = her/hers

Vietnamese does not use articles the way English does.

So thẻ ngân hàng can mean:

• a bank card
• the bank card
• just bank card

The exact meaning depends on context.

In Đây là thẻ ngân hàng của tôi, the context makes it clear that we mean my bank card, so English naturally uses the idea of a specific card, even though Vietnamese does not need a word like the.

They are related, but they are not used in the same way.

• đây can stand alone and is often used in Đây là... = This is...
• này usually comes after a noun and means this

Compare:

• Đây là thẻ ngân hàng của tôi. = This is my bank card.
• Thẻ ngân hàng này là của tôi. = This bank card is mine.

So you usually would not replace đây with này directly in Đây là...

Usually no, not in this kind of sentence.

When you are identifying one thing as another noun phrase, là is normally used:

• Đây là thẻ ngân hàng của tôi.

This is different from many adjective sentences, where là is not used:

• Thẻ này mới. = This card is new.
• Ngân hàng đó lớn. = That bank is big.

So a good rule is:

• noun = noun -> often use là
• noun = adjective -> usually no là

No. In this sentence, thẻ is the actual noun meaning card.

Vietnamese does have classifiers, but thẻ here is not one of them. It is the object itself.

So:

• thẻ ngân hàng = bank card

Not:

• classifier + something

In some situations, Vietnamese can add another word before a noun for emphasis or counting, but here thẻ is simply the noun.

Thẻ ngân hàng is a general term for a bank card.

Depending on context, it could refer to:

• a debit card
• an ATM card
• sometimes a credit card connected to a bank account

If you want to be more specific, Vietnamese can use more exact terms, for example:

• thẻ ATM
• thẻ ghi nợ = debit card
• thẻ tín dụng = credit card

So thẻ ngân hàng is broad and practical, but not maximally specific.

A rough guide for an English speaker is:

• Đây ≈ day
• là ≈ lah (with a falling tone)
• thẻ ≈ something like teh with a dipping/rising tone
• ngân ≈ nguhn
• hàng ≈ hahng (with a falling tone)
• của ≈ koo-uh with a dipping tone on the first vowel
• tôi ≈ toy

A few useful notes:

• đ is not the same as English d; it is a Vietnamese d sound written with a crossbar.
• The tone marks matter a lot in Vietnamese.
• â and ă are different vowels from plain a.

If you are learning pronunciation seriously, it is best to listen to a native speaker, because tones and vowel quality are hard to learn from English spelling alone.

Yes. That means This is my card.

The difference is:

• Đây là thẻ của tôi. = This is my card.
• Đây là thẻ ngân hàng của tôi. = This is my bank card.

So adding ngân hàng makes it more specific.

If the situation already makes it obvious that you are talking about a bank card, Vietnamese speakers might leave it out. If you want clarity, keeping ngân hàng is better.