simple present tense I go
present progressive tense I am going
present perfect tense I have gone
present perfect progressive tense I have been goin
It changes the word to an adjective or a verb
Hamlet killed Polonius believing him to be Claudius spying him.
They head toward Sandy Bar but stop because Duchess can't go any farther. They meet Tom and Piney (coming from Sandy Bar). Tom points at a cabin where the women sleep for the first night.