YOU SAID:
i forgot he was going out
INTO JAPANESE
彼が出かけるのを忘れた
BACK INTO ENGLISH
Forgot he went out
INTO JAPANESE
彼が出かけたことを忘れた
BACK INTO ENGLISH
I forgot that he went out
INTO JAPANESE
彼が出かけたことを忘れた
BACK INTO ENGLISH
I forgot that he went out
You love that! Don't you?