At a glance
～にもらいます means "to receive (something) from someone". The receiver is the subject, and the person who gives is marked with に.
[Receiver] は [Giver] に [Thing] を もらいます。
私は友だちにプレゼントをもらいました。 I received a present from a friend.
How to form it
The giver takes に and the thing takes を. もらう is a う-verb and conjugates like this:
| Form | Polite | Casual |
|---|---|---|
| Present | もらいます | もらう |
| Negative | もらいません | もらわない |
| Past | もらいました | もらった |
| Past negative | もらいませんでした | もらわなかった |
The receiver (私は) is often left out when it is clear from context.