благодарить vs поблагодарить

blagodarít' vs poblagodarít' — thank generally/in progress vs thank once

What it really means

Благодарить is the imperfective verb for thanking as a process, habit, or formal formula. Поблагодарить is perfective: it records one completed expression of thanks to a person.

Examples in natural speech

Я благодарю вас за помощь.
I thank you for your help.
Она поблагодарила врача после приёма.
She thanked the doctor after the appointment.
Не забывайте благодарить людей за поддержку.
Do not forget to thank people for their support.
Мы поблагодарили хозяев за ужин.
We thanked the hosts for dinner.
Компания благодарит клиентов за доверие.
The company thanks its customers for their trust.

Common mistakes

Do not replace a completed thank-you with благодарить: После встречи она поблагодарила коллег identifies one finished act. Use благодарить for a routine, an action underway, or a written formula such as Компания благодарит клиентов.

Memory tip

A written sign saying «Благодарим за понимание» is still speaking; поблагодарил is the tick in the minutes showing that the thanks were delivered.

Frequently asked questions

How do I say whom I thank and what for?

Use the accusative for the person and за + accusative for the reason: поблагодарить врача за совет; благодарить друзей за поддержку.

Is «благодарю» more formal than «спасибо»?

Usually, yes. Спасибо is the ordinary conversational thank-you; благодарю is polite and can sound formal, especially in service or business communication.

Can «поблагодарить» introduce reported speech?

Yes: Он поблагодарил меня и ушёл. It summarizes a completed act of thanks without needing to quote the exact words.

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