Many friendssss.

Correct me if I'm wrong. Because I'm going to apply all this concept to other nouns as many as I can.

Nominative: Singular
Друг

1. This is my friend.
Это мой друг.

2. My friend is coming soon.
Мой друг в ближайшее время.

Nominative: Plural
Друзья

1. These are my friends.
Это мои друзья.

2. My friends are coming soon.
Мои друзья уже не за горами.

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Genitive: Singular
Друга

1. This is my friend's dog.
Это собака моего друга.

Genitive: Plural
Друзей

1. This are my friends' dog.
Это есть собака моих друзей.
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Accusative: Singular
Друг

1. I love my friend.
Я люблю мой друг.

Accusative: Plural
Друзей

1. I love my friends.
Я люблю своих друзей.

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Dative: Singular
Другу

1. I gave the present to my friend.
Я дал настоящий моему другу.

Dative: Plural
Друзьям

1. I gave the present to my friends.
Я дал настоящий моим друзьям.

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Instrumental: Singular
Другом

1. I came with my friend.
Я приехал с моим другом.

Instrumental: Plural
Друзьями

1. I came with my friends.
Я пришел с друзьями.

Also can anyone help me fill up this huge blank. I need it for reference.

Nominative singular: Рука
Nominative plural:

Accusative singular: Руку
Accusative plural:

Dative singular: Руке
Dative plural:

Genitive singular: Руки
Genitive plural:

Instrumental singular:
Instrumental plural:

Nominative singular
1. Правильно.
2. Мой друг придёт в ближайшее время. Better - Мой друг скоро придёт.
Nominative plural
1. Снова правильно
2. Not very good. We use "уже не за горами" talking about time. Мои друзья скоро придут. Или приедут. Мои друзья уже близко.
Genitive: Singular
Отлично!
Genitive: Plural
Это собака моих друзей. No need in "есть".
Accusative: Singular
Nope. The correct form is "друга" because he is a living thing.
Я люблю своего друга.
Accusative: Plural
Правильно.
Dative: Singular
The form is correct. But not "настоящий", but "подарок".
Я подарил/подарила своему другу подарок
Dative: Plural
Я подарил/подарила своим друзьям подарок
Instrumental: Singular/Plural - correct.

Nominative singular: Рука
Nominative plural: Руки

Accusative singular: Руку
Accusative plural: Руки

Dative singular: Руке
Dative plural: Рукам

Genitive singular: Руки
Genitive plural: Рук

Instrumental singular: Рукой
Instrumental plural: Руками

We forgot about Locative! О друге - о друзьях, в руке - в руках.

Hi, g2gcya; enter your nouns, verbs etc here 野
and get declensions. 野

Thank you.

"Nope. The correct form is "друга" because he is a living thing.
Я люблю своего друга."

When should I use "мой" and when should I use "свой" when i want to say my?

Use СВОЙ when the pronoun refers to the same person expressed by the verb in the same clause.

Дима люблит свою жену. К сожалению, его друг Коля тоже любит его жену. (То есть, жену Димы.)

Quote:

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The form is correct. But not "настоящий", but "подарок".

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Right -- настоящий means "the present" as contrasted with "the past" and "the future" (like when you're talking about verb tenses). But подарок is "a present" in the sense of "a gift" (as in, "We gave him a shirt as a birthday gift").

Quote:

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Originally Posted by Throbert McGee

Right -- настоящий means "the present" as contrasted with "the past" and "the future" (like when you're talking about verb tenses). But подарок is "a present" in the sense of "a gift" (as in, "We gave him a shirt as a birthday gift").

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I guess it would be better to say that "настоящий" is an adjective (masculine) and "подарок" is a noun (masculine too).

Also "настоящий" could mean "real", "authentic", "genuine"