9. He / break / his leg →

Translate to Russian:

He does not break his leg.

Explanation:

To form a negative sentence in the present simple tense with the pronoun 'He' (third person singular), we use the auxiliary verb 'does' followed by 'not' and the base form of the verb. The verb 'break' remains in its base form. So, 'He breaks' becomes 'He does not break' or 'He doesn't break'.