qǐng jīhuó yínhángkǎ.

请 means please here. It makes the sentence a polite request or instruction.

A very common pattern in Mandarin is:

请 + verb

For example:

• 请坐 = Please sit.
• 请等一下 = Please wait a moment.
• 请填写表格 = Please fill out the form.

So 请激活银行卡 means Please activate the bank card.

In Mandarin, the subject is often omitted when it is obvious from the situation.

In this sentence, the understood subject is you. A screen, a bank employee, or a written notice does not need to say it explicitly.

So Mandarin can simply say:

请激活银行卡。

Even though in natural English we understand it as:

Please activate the bank card.

Yes. 请 makes it polite.

That said, it still sounds like a direct instruction, which is normal in contexts like:

• bank notices
• ATM screens
• customer service instructions
• app or website prompts

If you want to make it even more polite in speech, you could say:

• 请您激活银行卡。
• 请激活您的银行卡。

Adding 您 or 您的 makes it sound more respectful.

激活 is a verb meaning to activate, to enable, or to make active.

It is commonly used for things like:

• 激活银行卡 = activate a bank card
• 激活账号 = activate an account
• 激活手机卡 = activate a SIM card / phone card
• 激活功能 = activate a function/feature

So in this sentence, 激活 is the main verb.

This follows the basic Mandarin word order:

verb + object

Here:

• 激活 = activate
• 银行卡 = bank card

So:

• 激活银行卡 = activate the bank card

And with 请 added in front:

• 请激活银行卡 = please activate the bank card

This is very similar to other Mandarin commands, such as:

• 请打开门 = Please open the door.
• 请出示证件 = Please show your ID.

银行卡 literally means bank card.

It is a general term for a card issued by a bank. Depending on context, it may refer to:

• a debit card
• an ATM card
• sometimes a bank-issued credit card

If you want to be more specific:

• 借记卡 = debit card
• 信用卡 = credit card

So 银行卡 is broad and practical, especially in everyday banking language.

Because Mandarin often leaves out possession when it is obvious from context.

If a bank system or employee tells someone 请激活银行卡, everyone already understands it means your bank card.

Adding the possessor is possible:

• 请激活你的银行卡。
• 请激活您的银行卡。

These are also correct.
The version without 你的/您的 is shorter and very natural in instructions.

Because this sentence is giving an instruction, not describing a completed action.

请激活银行卡。 means:

• Please activate the bank card.

But 了 often marks a new situation or completed action. For example:

• 银行卡激活了。 = The bank card has been activated.

So leaving out 了 is exactly what you would expect in a request or command like this.

Yes, that is possible.

请把银行卡激活。 also means Please activate the bank card.

The 把 sentence puts extra focus on what happens to the object and the resulting change. It often sounds a little more result-focused.

Compare:

• 请激活银行卡。 = simple, direct, very common
• 请把银行卡激活。 = also correct, slightly more focused on causing the card to become activated

In many written instructions, the simpler 请激活银行卡 is more common.

Because 行 is a character with more than one pronunciation, and the pronunciation depends on the word.

In 银行 (bank), it is pronounced háng:

• 银行 = yínháng

But in other words, 行 can be pronounced xíng, for example:

• 可以，不行 = okay / not okay
• 行吗？ = Is that okay?

So in 银行卡, the middle part 银行 must be pronounced yínháng, not yínxíng.

A natural breakdown is:

请 / 激活 / 银行卡

Pinyin:

qǐng / jīhuó / yínhángkǎ

Tones:

• 请 qǐng = 3rd tone
• 激 jī = 1st tone
• 活 huó = 2nd tone
• 银 yín = 2nd tone
• 行 háng = 2nd tone
• 卡 kǎ = 3rd tone

A learner-friendly way to practice it is:

1. say 激活 clearly first
2. then say 银行卡
3. then add 请 at the beginning

So practice:

• 激活
• 银行卡
• 请激活银行卡

In real speech, it should sound smooth and connected rather than word-by-word.