YOU SAID:
Sometimes I laugh at nothing
INTO JAPANESE
時々私は何も笑わない
BACK INTO ENGLISH
Sometimes I will not laugh at anything
INTO JAPANESE
時々私は何も笑っていない
BACK INTO ENGLISH
Sometimes I have not laughed anything
INTO JAPANESE
時々私は何も笑っていない
BACK INTO ENGLISH
Sometimes I have not laughed anything
You've done this before, haven't you.