The Instrumental Case: Means of Action

1. Two Meanings of "With": с vs. No Preposition

In English, the word "with" is a bit of a multitasker. We use it for both accompaniment ("I'm with a friend") and for tools ("I write with a pen"). Russian is more precise. It makes a clear grammatical distinction between these two ideas:

• Accompaniment/Inclusion: Use с + Instrumental. (e.g., ко́фе с молоко́м - coffee with milk)
• Instrument/Means: Use Instrumental case alone. (e.g., писа́ть ру́чкой - to write with a pen)

This distinction is fundamental. The following short video explains this core concept very effectively.

As the video sums up, when you use something as an instrument, the case ending itself contains the meaning "by means of." You don't need a preposition.

2. Using Instruments and Tools

Since you enjoy drawing and writing, this use of the instrumental case will be immediately useful. Let's look at how to talk about the tools you use for your hobbies.

The question "What do you [do something] with?" is formed with Чем...? (Chto? in the instrumental case).

Let's break down that key part of the dialogue:

• Чем ты рису́ешь? (What do you draw with?)
• Ра́ньше я рисова́ла карандаша́ми, a сейча́с я предпочита́ю рисова́ть кра́сками. (Before, I drew with pencils, and now I prefer to draw with paints.)

Notice that карандаша́ми (with pencils) and кра́сками (with paints) are in the instrumental case and have no preposition. The nouns themselves convey the meaning "by means of."

The following video provides more clear examples and strongly reinforces the "no с" rule.

3. Means of Transport

This same logic of "by means of" extends to transportation. When you travel by a certain vehicle, you are travelling by means of that vehicle. Therefore, you use the instrumental case without a preposition.

Here are the key examples from that reading:

• е́хать авто́бусом - to go by bus
• е́хать по́ездом - to go by train
• лете́ть самолётом - to fly by plane

It's useful to know, as the resource mentions, that you will also frequently see на + another case (e.g., е́хать на авто́бусе) to express the same idea. Both are correct, but today we are focusing on the instrumental construction.

4. Practice Time

Let's put this all together. Determine whether you need to use с (for accompaniment) or just the instrumental case (for a tool/means).

Activity 1: с or no с?
Complete the sentences by putting the word in parentheses into the correct form, deciding if с is needed.

1. Я люблю́ рисова́ть __________. (акваре́ль - watercolor, feminine -ь noun)
2. Мы е́дем в Петербу́рг __________. (по́езд - train)
3. Ве́чером я бу́ду игра́ть в ви́деои́гры __________. (друзья́ - friends)
4. Он ре́жет хлеб __________. (нож - knife)
5. Ты пьёшь чай ______ и́ли без? (са́хар - sugar)

Activity 2: Translate the sentences.

1. I write with a pencil. (каранда́ш)
2. She is travelling by car. (маши́на)
3. I eat with a fork. (ви́лка)

Conclusion

Great job today! You've now learned the two primary and distinct uses of the instrumental case, which will significantly improve the accuracy and nuance of your Russian.

Key Takeaways:

• To describe the instrument or tool used to perform an action, use the noun in the instrumental case without the preposition с. (e.g., рисовать ки́стью - to paint with a brush).
• To describe the means of transport, also use the noun in the instrumental case without с. (e.g., ехать маши́ной - to go by car).
• This is distinct from expressing accompaniment, which always requires с + instrumental (e.g., гулять с соба́кой - to walk with a dog).

Preview of the next lesson:
In our next lesson, we will shift gears from noun cases to verbs. You will learn how to form the imperative mood, which is used to give commands and make requests, like иди́ (go!) and смотри́те (look!). This is essential for everyday interactions.