Non-finite forms of the verb

3. (The Present Participle):
Hozirgi zamon sifatdoshi gapda sabab holi ham 
bo’lib keladi. Ularni sabab ergash gaplar bilan almashtirish mumkin.
Knowing English well, I can translate English texts without a dictionary. = As I know 
English well, I can translate English texts without a dictionary. Ingliz tilini yaxshi 
bilganligim sababli matnlarni lug’atsiz tarjima qila olaman.
4. (Perfect Participle Active)
Tugallangan zamon sifatdoshi gapda sabab holi 
bo’lib keladi va kesimda ifodalangan ish-harakatdan oldin sodir bo’lgan ish-harakatni 
ifodalaydi: 
Having lived in London for many years he knew English very well. = As he 
had lived in London for many years he knew English very well. Ko’p yillar Londonda 
yashaganligi sababli u inglizchani yaxshi bilardi.