IF YOU GO ON TO DO SOMETHING, YOU MOVE FROM ONE ACTION TO ANOTHER.
IF YOU REMEMBER DOING SOMETHING, YOU HAVE AN IMAGE OF DOING IT IN YOUR MIND.
IF YOU REMEMBER TO DO SOMETHING, YOU DO SOMETHING WHICH IS ON YOUR MENTAL LIST OF THINGS TO DO.
IF YOU STOP DOING SOMETHING, YOU DO NOT DO IT ANY LONGER.
IF YOU STOP TO DO SOMETHING, YOU COME TO A HALT IN ORDER TO DO SOMETHING.
IF YOU GO ON DOING SOMETHING, YOU CONTINUE DOING IT.
IF YOU TRY TO DO SOMETHING, YOU ATTEMPT IT BUT DO NOT NECESSARALY ACHIEVE IT.
IF YOU TRY DOING SOMETHING, YOU DO IT IN ORDER TO SEE WHAT HAPPENS.
The chairman welcomed the audience, then he went on to introduce the guest speakers.
He tried to reach the next branch, but it was too high.
They stopped talking when I walked into the room.
Did you remember to feed the fish?
I remember going to the circus when I was a child.
He went on talking for hours.
She stopped to admire the flowers.
He tried ringing the bell, but there was no answer.