[Perikles]

Originally Posted by irmamar

I think that Lee ying wants to transform passive voice into active, observing the rules of the tenses.

Ah - ok

THE STREETS HAVE BEEN POLLUTED DUE TO PEOPLE THROW THEIR TRASH IN EVERYWEHRE

People have thrown their trash everywhere and have polluted the streets.



THE STREETS ARE BEING POLLUTED BY PERSONS THAT TRHOW THEIR TRASH ON THE FLOOR.

People are throwing their trash on the ground, and are polluting the streets.

ground = outside the house
floor = inside the house