Когда малышка видит пирамидку, она сразу перестаёт плакать.

Because Когда малышка видит пирамидку is a subordinate clause introduced by когда. In Russian, subordinate clauses are normally separated from the main clause with a comma.

So the structure is:

• Когда малышка видит пирамидку, = When/Whenever the little girl sees the stacking toy
• она сразу перестаёт плакать = she immediately stops crying

This comma is required in standard Russian punctuation.

Here it can feel like when or whenever, depending on context.

In this sentence, the present-tense verbs suggest a repeated or typical situation:

• Когда малышка видит пирамидку, она сразу перестаёт плакать.

That often means something like:

• Whenever the little girl sees the stacking toy, she immediately stops crying.

If the sentence were describing one specific moment in a story, English might translate it as when. Russian когда itself does not force that distinction.

Because it is the direct object of видит (sees), so it has to be in the accusative case.

Dictionary form:

• пирамидка

Accusative singular:

• пирамидку

This is a regular pattern for many feminine nouns ending in -а:

• книга → книгу
• девочка → девочку
• пирамидка → пирамидку

So:

• видит пирамидку = sees a/the stacking toy

Малышка literally means little girl, baby girl, or little one. It is affectionate and often used for a small child.

Depending on context, it could sound like:

• the little girl
• the baby
• the little one

It is softer and more affectionate than just девочка.

Видит is the 3rd person singular present form of видеть (to see).

Conjugation of видеть in the present tense:

• я вижу
• ты видишь
• он/она видит
• мы видим
• вы видите
• они видят

Since the subject is малышка / она (she), Russian uses:

• она видит = she sees

Yes, Russian could often omit it:

• Когда малышка видит пирамидку, сразу перестаёт плакать.

That is possible because the verb form перестаёт already shows 3rd person singular.

However, она is included here for clarity and natural flow. It makes the sentence easier to follow, especially since the first clause has its own subject noun (малышка).

So both are possible, but the version with она is very natural.

Сразу means immediately, right away, or at once.

In this sentence:

• она сразу перестаёт плакать = she immediately stops crying

Its position is natural because it modifies the action перестаёт плакать. Russian word order is flexible, so you might also see:

• она перестаёт сразу плакать
• сразу она перестаёт плакать

But the original version sounds the most neutral and natural.

Because after переставать / перестать (to stop), Russian uses an infinitive.

So the pattern is:

• перестать + infinitive
• переставать + infinitive

Examples:

• перестать есть = to stop eating
• перестать говорить = to stop talking
• перестаёт плакать = she stops crying

You cannot use a finite verb form like плачет after перестаёт here.

Because плакать describes an ongoing action: to cry.

When you say перестать / переставать + infinitive, the infinitive is usually the action that was in progress and then stops. That naturally fits the imperfective:

• перестаёт плакать = stops crying

A perfective verb like заплакать means to start crying, so it would not fit here.

Compare:

• заплакать = to begin crying
• плакать = to be crying / to cry
• перестать плакать = to stop crying

Russian present tense is used for both:

1. actions happening now, and
2. habitual or repeated situations.

So:

• Когда малышка видит пирамидку, она сразу перестаёт плакать.

can mean a general repeated pattern:

• Whenever she sees the toy, she stops crying.

Russian does not need a special tense for this; the present tense works naturally.

• перестаёт = present tense, imperfective
• перестанет = future tense, perfective

So:

• она перестаёт плакать = she stops crying / she is stopping crying
• она перестанет плакать = she will stop crying

In your sentence, перестаёт fits because the whole sentence describes a present-time pattern or repeated reaction.

Most naturally, it sounds like a repeated or typical situation.

That is because:

• both verbs are in the present tense: видит, перестаёт
• the sentence describes a cause-and-effect pattern

So a very natural interpretation is:

• Whenever the little girl sees the stacking toy, she immediately stops crying.

In the right context, it could also describe a vivid scene in a story, but the habitual reading is probably the first one learners should notice.

Yes. Russian word order is flexible, although different orders may sound more neutral, emphatic, or literary.

The original order is neutral and natural:

• Когда малышка видит пирамидку, она сразу перестаёт плакать.

Possible alternatives:

• Когда малышка видит пирамидку, сразу перестаёт плакать.
• Она сразу перестаёт плакать, когда малышка видит пирамидку.
• Сразу перестаёт плакать, когда малышка видит пирамидку.

These are grammatically possible, but the original is the clearest standard version.

Yes, it matters for pronunciation and stress.

• перестаёт is pronounced with stress on -ёт
• the ё tells you the sound is yo

So:

• перестаёт = roughly pyee-ree-sta-YOT

In many printed texts, Russian writers replace ё with е, so you may also see:

• перестает

But the correct pronunciation is still перестаёт. For learners, keeping ё is very helpful.