Кравець перевірив розмір.

перевірив is the past tense, masculine singular form of the verb перевірити.

That tells you:

• the action happened in the past
• the subject is one male person or a masculine noun
• the verb is perfective, so it presents the action as completed

So Кравець перевірив розмір means the tailor checked the size, with the sense that the checking was completed.

Compare:

• перевірив = checked, finished checking
• перевіряв = was checking / checked habitually / was engaged in checking

Yes. In Ukrainian, past tense verbs agree with gender and number.

With кравець meaning tailor and referring here to a man, the verb is masculine:

• перевірив = masculine singular

Other possible forms:

• перевірила = feminine singular
• перевірило = neuter singular
• перевірили = plural

So if the subject were female, you would say:

• Кравчиня перевірила розмір. = The seamstress checked the size.

It is in the accusative case — but for many inanimate masculine nouns, the accusative singular looks exactly like the nominative singular.

So:

• nominative: розмір
• accusative: розмір

That is why the form does not visibly change.

Compare with an animate masculine noun, where accusative usually matches the genitive:

• nominative: учень = student
• accusative: учня = student (as a direct object)

But with розмір (size), which is inanimate, the accusative stays розмір.

Кравець is in the nominative case, because it is the subject of the sentence — the one performing the action.

So the structure is:

• Кравець = subject, nominative
• перевірив = verb
• розмір = direct object, accusative

This is a very common basic sentence pattern in Ukrainian.

It could be either, depending on context.

• кравець (lowercase, inside a sentence) = tailor
• Кравець (capitalized) can also be a surname, like Kravets

In your sentence, because the word comes first, it is capitalized anyway, so the sentence alone does not prove which one it is.

So this could mean either:

• The tailor checked the size
• Kravets checked the size

Usually context tells you which one is intended.

Ukrainian has no articles like English a/an/the.

So:

• Кравець can mean a tailor or the tailor
• розмір can mean a size or the size

You understand whether it is a or the from context.

This is very normal in Ukrainian, and learners have to get used to not translating articles word-for-word.

No. Ukrainian word order is more flexible than English word order because case endings help show grammatical roles.

The neutral, straightforward order here is:

• Кравець перевірив розмір.

But other orders are possible for emphasis, for example:

• Розмір перевірив кравець.
• Перевірив кравець розмір.

These alternatives sound more marked and depend on context.
For a beginner, it is best to treat subject + verb + object as the most natural default pattern.

The dictionary forms are:

• кравець = tailor
• перевірити = to check, to verify
• розмір = size

The verb form in the sentence, перевірив, comes from перевірити.

This is useful because when you look up Ukrainian verbs, you usually look them up in the infinitive form.

A rough pronunciation guide is:

• Кравець ≈ kra-VEHTS’
• перевірив ≈ pe-re-VEE-riv
• розмір ≈ ROZ-meer

A few points:

• Stress matters in Ukrainian.
• Кравець is stressed on the last syllable: кравЕць
• перевірив is stressed on -ві-: перевІрив
• розмір is stressed on the first syllable: рОзмір

Also, the final ць in кравець is a soft sound, not a hard English ts.

The choice is about aspect.

• перевірити / перевірив = perfective
  Focuses on the action as a completed whole
• перевіряти / перевіряв = imperfective
  Focuses on the process, repetition, or ongoing nature

So:

• Кравець перевірив розмір = The tailor checked the size.
  This sounds like one completed act.
• Кравець перевіряв розмір = The tailor was checking the size / used to check the size.
  This focuses more on the process or repeated action.

In a simple finished event, перевірив is the natural choice.

Yes, sometimes — if the subject is already clear from context.

Because перевірив is masculine singular past tense, it already suggests:

• he checked or
• a masculine subject checked

So in context:

• Перевірив розмір. = He checked the size.

However, if you are introducing the subject for the first time, keeping Кравець is clearer.

Usually розмір means size, especially for things like:

• clothing
• shoes
• measurements
• dimensions

In this sentence, with кравець (tailor), розмір most naturally means a clothing measurement or size.

So the sentence strongly suggests a tailoring context:

• taking measurements
• checking fit
• confirming clothing size

That is why the sentence sounds very natural.