A1verb
يَكْتُبُ
yaktubu
he writes
Example
الطَّالِبُ يَكْتُبُ الدَّرْسَ.
aṭ-ṭālibu yaktubu ad-darsa.
The student writes the lesson.
Grammar
Form I verb, present tense. Root k-t-b relates to writing. Same root gives: kitāb (book), maktaba (library), kātib (writer).