65. УЛЫБАТЬСЯ - УЛЫБНУТЬСЯ

'УЛЫБАТЬСЯ' (Imperfective aspect) // 'УЛЫБНУТЬСЯ' (Perfective aspect) to smile. Imperfective verbs have Present, Past and Future tenses. Perfective verbs have Past and Future tenses, no Present tense. In the first comment you can find PDF-file with all the forms in the sentences. You can download this file for free)))