active participle-verb ING

example active participle v-ing:

While      : Studying in the new class,i met my old teacher
After       : Having played tennis, he went to home with with her father
Because  : Being busy, Teddy cant go to vacation
Because, he had the youngest child he was traded evrything he wants
If             : Studying hard,you will be smart
If you study hard,you will be smart