YOU SAID:
I like cake very much.
INTO JAPANESE
私はケーキが大好きです。
BACK INTO ENGLISH
I love cake.
INTO JAPANESE
私はケーキが大好き!
BACK INTO ENGLISH
I love cake!
INTO JAPANESE
私はケーキが大好き!
BACK INTO ENGLISH
I love cake!
That didn't even make that much sense in English.