Question 1

Why do we use занят and свободен here instead of their full adjective forms?

Accepted Answer

занят and свободен are short-form adjectives. In Russian, we use short forms to describe temporary states, like being busy or free on a specific day. Full adjectives are usually used to describe permanent characteristics.

Question 2

How would these short-form adjectives change if the sentence was about a female nurse (медсестра)?

Accepted Answer

Short-form adjectives must agree with the gender of the subject. For a feminine subject, they take an -а ending. The sentence would become: Вчера медсестра была занята, а сегодня она свободна.

Question 3

Where did the е in свободен come from? The feminine form is just свободна.

Accepted Answer

In masculine short-form adjectives, a fill vowel (like е or о) is often added before the final consonant to make the word easier to pronounce. When you add the feminine -а or plural -ы endings, that extra vowel drops out.

Question 4

Why is there a verb (был) in the first half of the sentence, but no verb in the second half?

Accepted Answer

The first half is in the past tense, so we must use был (was). In Russian, the present tense of the verb 'to be' (is/am/are) is almost always dropped. So, он свободен simply puts the pronoun and adjective together to mean 'he is free'.

Question 5

Why is the word for 'but' а here instead of но?

Accepted Answer

а is used to contrast two parallel situations, like comparing yesterday with today. You use но when there is a direct contradiction or an unexpected result (for example: 'He is sick, но he is working').

Вчера врач был занят, а сегодня он свободен.

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