Эффект появился сразу.

The effect appeared immediately.

Breakdown of Эффект появился сразу.

• появиться: to appear
• сразу: immediately
• эффект: the effect

Questions & Answers about Эффект появился сразу.

Why is the verb появился and not some form like появилась or появилось?

Because the subject эффект is masculine singular.

In the past tense, Russian verbs agree with the subject in gender and number:

• появился = masculine singular
• появилась = feminine singular
• появилось = neuter singular
• появились = plural

Since эффект is a masculine noun, the sentence uses появился.

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What case is эффект in here?

It is in the nominative case, because it is the subject of the sentence.

In Эффект появился сразу, the thing doing the appearing is эффект, so it stays in its dictionary form:

• эффект = nominative singular

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Why is there no word for the or an?

Russian does not have articles.

So эффект can mean:

• an effect
• the effect

Which one sounds best depends on context. Russian leaves that to the situation rather than using separate words like the and a/an.

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What exactly does появился mean here?