لطفا یک سیب بده.

A natural, colloquial pronunciation is:

• lotfan ye sib bede Notes:
• لطفا is often pronounced lotfan (the final -an is common in speech even if it’s written لطفا without the diacritic ً).
• یک is very often reduced from yek to ye in speech.
• بده is pronounced bede.

Both refer to the same word (please).

• لطفاً includes the diacritic ً (tanvīn) that hints at an -an sound: lotfan.
• In everyday typing, diacritics are usually omitted, so people commonly write لطفا. So: لطفاً is more “fully marked,” لطفا is the common plain spelling.

It’s understandable, but it’s informal and can sound a bit direct depending on context because بده is an informal imperative (give!). More polite/common options:

• Formal/polite: لطفاً یک سیب بدهید.
• Very common conversational request: میشه یه سیب بدی؟ (literally Can you give an apple?)

بده is the imperative (command/request) form of the verb دادن (to give).

• Infinitive: دادن
• Imperative (informal singular): بده = give!
• Imperative (formal / to someone you address politely): بدهید = please give

Persian often omits obvious pronouns/recipients when context makes them clear. So لطفا یک سیب بده usually implies (to me). If you want to be explicit, you can add:

• لطفاً به من یک سیب بده. = Please give me an apple. Very commonly in speech you might also hear:
• لطفاً یه سیب به من بده.

را typically marks a definite/specific direct object.

• یک سیب = an apple (indefinite), so را is usually not used. If you mean that specific apple, you can make it definite and use را:
• اون سیب رو بده. = Give that apple.
• سیب رو بده. (in context) = Give the apple.

یک often corresponds to a/an, but it also literally means one. You can drop it if you’re speaking generally or the context already implies it:

• لطفاً سیب بده. = Please give (some) apple / an apple. But یک سیب is clearer for one apple.

Yes, لطفا/لطفاً is flexible. Common positions:

• لطفاً یک سیب بده.
• یک سیب لطفاً بده. (a bit like An apple, please.)
• لطفاً بده یک سیب. (possible in casual speech, but less “neutral”)

The most neutral order is object + verb (Persian is typically SOV):

• یک سیب بده. You can rearrange for emphasis, especially in speech:
• یه سیب بده. (most common spoken form)
• بده یه سیب. (more conversational/urgent tone)

In imperatives, Persian (like English) normally doesn’t state the subject.

• بده already implies you (informal singular) give. If you want to add the subject for emphasis, you can, but it’s marked and often sounds scolding/insistent:
• تو بده! = You give (it)!