Завдяки мамі, я нічого не забув.

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Breakdown of Завдяки мамі, я нічого не забув.

• мій: my
• мати: the mother
• не: not

Questions & Answers about Завдяки мамі, я нічого не забув.

Why is the preposition завдяки used here instead of the verb дякую?

завдяки is a preposition meaning “thanks to” or “due to” and introduces the cause of a positive result.
дякую is a verb meaning “I thank” and would need an object in the accusative (e.g. “Я дякую мамі” means “I thank mom”). They are not interchangeable.

What case does мама take after завдяки, and why is it мамі?

In Ukrainian, завдяки requires the dative case. That’s why мама (nominative) becomes мамі (dative).

Is the comma after мамі mandatory?

No, the comma is optional. It marks “завдяки мамі” as an introductory adverbial phrase. You can write:
– Завдяки мамі я нічого не забув.
– Завдяки мамі, я нічого не забув.

Why does the sentence use нічого не забув instead of something like не забув нічого?