My father's name is Bob.
句式有点单一,比如,可以改为He likes playing ping-pong best.
He doesn't eat breakfast.这句有点不适合,可改为：He doesn't like eating breakfast.
I don't think it's healthy.(这里否定前置）
He likes having rice for lunch.同理,He likes having/eating cakes for dinner .或For lunch,my
father likes eating cakes.
sweet 是 甜的 的意思,改为sweetmeats 甜品 比较好
至于最后一句,My father is the most important person in my heart.(我爸爸是我心中最重要的人） 我认为这样写比较好
以上,本人纯手打!你可以自己斟酌