На рубашке намокла одна манжета, потому что я пролила воду.

One cuff on the shirt got wet because I spilled water.

Breakdown of На рубашке намокла одна манжета, потому что я пролила воду.

• я: I
• вода: the water
• на: on
• потому что: because

Questions & Answers about На рубашке намокла одна манжета, потому что я пролила воду.

Why is it на рубашке? What case is рубашке?

Рубашке is in the prepositional case because на here means on in a location sense.

• на рубашке = on the shirt
• If there were movement onto the shirt, Russian would usually use the accusative:
  • на рубашку = onto the shirt

So here the idea is that the wet cuff is located on the shirt, not moving onto it.

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Why is the verb намокла?

The verb is намокнуть = to get wet / become wet.

In the past tense, Russian verbs agree with the subject in gender and number. The subject here is манжета, which is feminine singular, so the past tense form is:

• masculine: намок
• feminine: намокла
• neuter: намокло
• plural: намокли

So:

• манжета намокла = the cuff got wet

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Why is it одна манжета, not один манжета?