wǒ yào guàshī yínhángkǎ.

挂失 is a set phrase used when you officially report something like a bank card, ID card, passbook, or phone card as lost so that it can be blocked or canceled.

So in this sentence, 挂失银行卡 means to report a bank card lost.

This is not the same as simply saying 我丢了银行卡 (I lost my bank card).

• 丢了 describes the fact that you lost it.
• 挂失 describes the formal action of notifying the bank or institution.

要 here can mean either:

• want to
• be going to / need to

In this sentence, it usually sounds like I need to / I’m going to report my bank card lost.

Chinese 要 is often broader than English want. Depending on context, it can express intention, necessity, or near-future action.

For example:

• 我要挂失银行卡。 = I need to report my bank card lost.
• In the right situation, it could also sound like I want to report my bank card lost.

Chinese word order here follows a very common pattern:

subject + modal/auxiliary verb + main verb + object

So:

• 我 = subject (I)
• 要 = modal-like word (want to / need to / going to)
• 挂失 = main verb
• 银行卡 = object

This is very similar to English:

• I want to report my bank card lost.

Chinese usually keeps the verb before the object, so 挂失银行卡 is natural.

Yes, absolutely.

You can say:

• 我要挂失银行卡。
• 我要挂失我的银行卡。

Both are grammatical.

The version without 我的 is very natural because it is already obvious that it is your bank card. Chinese often leaves out possessive words when the meaning is clear from context.

Adding 我的 makes it a little more explicit:

• 我要挂失我的银行卡。 = I need to report my bank card lost.

银行卡 means bank card, which is a broad term. It can refer to cards issued by a bank, often including:

• debit cards
• ATM cards
• sometimes bank-related payment cards in general

信用卡 specifically means credit card.

So if you mean a general bank-issued card or a debit card, 银行卡 is a good choice. If you specifically mean a credit card, say 信用卡.

Examples:

• 我要挂失银行卡。 = I need to report my bank card lost.
• 我要挂失信用卡。 = I need to report my credit card lost.

No. 挂失 can be used for several important items or accounts that are officially registered.

Common examples:

• 挂失银行卡 = report a bank card lost
• 挂失身份证 = report an ID card lost
• 挂失手机卡 = report a SIM card lost
• 挂失存折 = report a bankbook/passbook lost

It is most common in formal or service-related situations, especially with banks, telecom companies, and official documents.

The pinyin is:

Wǒ yào guàshī yínhángkǎ.

Tone breakdown:

• 我 wǒ — 3rd tone
• 要 yào — 4th tone
• 挂 guà — 4th tone
• 失 shī — 1st tone
• 银 yín — 2nd tone
• 行 háng — 2nd tone
• 卡 kǎ — 3rd tone

A natural rhythm is:

Wǒ yào | guàshī | yínhángkǎ.

A useful note:

• In 银行, the second character is pronounced háng, not xíng.

The character 行 has more than one pronunciation.

In 银行 (bank), it is pronounced háng.

Some common pronunciations of 行:

• xíng = okay; to go; capable
• háng = line, profession, row; used in 银行

So:

• 银行 = yínháng
• not yínxíng

This is something learners simply need to memorize as part of the word.

Sometimes learners ask this because 报失 looks like it should mean report lost. In real usage, for bank cards and official items, 挂失 is the standard and much more natural term.

So the safest and most idiomatic sentence is:

我要挂失银行卡。

If you are talking to bank staff, this is exactly the kind of expression they expect.

Yes, but in real life they might make it a little fuller or more polite.

Common natural versions include:

• 我要挂失银行卡。 = I need to report my bank card lost.
• 我的银行卡丢了，我想挂失。 = My bank card is lost; I’d like to report it lost.
• 你好，我要挂失一张银行卡。 = Hello, I need to report a bank card lost.
• 麻烦帮我挂失一下银行卡。 = Please help me report my bank card lost.

So your sentence is correct and useful, especially as a clear direct statement.

A measure word is not required here because 银行卡 is the direct object in a general sense.

You are talking about the action of reporting the bank card lost, not counting it.

If you want to specify one card, you can say:

• 我要挂失一张银行卡。

Here:

• 一 = one
• 张 = the measure word for flat objects like cards, paper, tables, etc.

Both are correct:

• 我要挂失银行卡。 = I need to report my bank card lost.
• 我要挂失一张银行卡。 = I need to report one bank card lost.

In conversation, yes, sometimes.

If the subject is obvious, Chinese often drops it:

• 要挂失银行卡。

This might sound like:

• Need to report a bank card lost
• or simply a shortened version of I need to report my bank card lost

But if you are learning or speaking clearly, especially in a service situation, 我要挂失银行卡。 is better and more complete.

It sounds more natural and less abrupt than just 要挂失银行卡 on its own.