YOU SAID:

Grandpa does not like it when I shake him violently

INTO JAPANESE

おじいちゃんは私が彼を激しく振ったときそれを好まない

BACK INTO ENGLISH

Grandpa doesn't like it when I shake him hard

INTO JAPANESE

おじいちゃんは私が彼を激しく振ったときそれが好きではありません

BACK INTO ENGLISH

Grandpa doesn't like it when I shake him hard