Вчителька пояснює граматику чітко.

вчителька is a noun meaning “female teacher.”

• Part of speech: noun
• Gender: feminine (the suffix -ка is a common feminine marker)
• Number: singular
• Case: nominative (it’s the subject of the sentence)

The verb пояснює (explains) agrees with it as 3rd person singular.

граматику is the accusative singular of граматика (grammar).

• Case: accusative (direct object)
• Number: singular
• Gender: feminine

In Ukrainian, the direct object of a transitive verb like пояснює usually takes the accusative. Feminine nouns ending in -а change to -у in the accusative.

пояснює is from the imperfective verb пояснювати (to explain).

• Person: 3rd person
• Number: singular
• Tense: present
• Aspect: imperfective (focuses on the ongoing or habitual action)

In Ukrainian, present‐tense verbs don’t need an auxiliary (“does” or “is”)—the single form пояснює covers both simple and continuous nuances.

чітко is an adverb meaning “clearly” or “precisely.”

• It modifies the verb пояснює, describing how the action is done.
• Formation: adjective чіткий
  • adverbial suffix -о → чітко

Adverbs of manner in Ukrainian often end in -о or -е.

The stressed syllables are as follows:

• вчи́телька (stress on -тель-)
• поясню́є (on -ню́-)
• грамати́ку (on -ти́-)
• чи́тко (on чи́т-)

Paying attention to stress is crucial for natural pronunciation.

You’d replace вчителька with the masculine вчитель. All other words stay the same:
Вчитель пояснює граматику чітко.

The verb пояснює remains 3rd person singular, so it still agrees correctly.

Yes, Ukrainian word order is fairly flexible. For emphasis you can say:

• Чітко вчителька пояснює граматику. (Emphasizes the clarity.)
• Вчителька граматику пояснює чітко. (Less common, but still grammatical.)

Changing word order shifts the focus or nuance but doesn’t break grammar.