中翻英“最令我讨厌的是，父母依旧把我当小孩子”

What I'm definitely averse to is that my parents still treat me as a child.
一、讨厌，我认为只是小孩子对父母行为的一种不愿意，反感。hate有点过了，dilike（不喜欢）也可以用。但be averse to 既有不喜欢，也有反感的意思。
二、句中的“最”实际上不是真正的“最讨厌”（你生活中令你最讨厌的多的是），其含义只是表达对讨厌的一种强烈心情，故用definitely比较确切。
如有错误，请指正~~~

原句：最令我讨厌的是，父母依旧把我当小孩子
翻译：The most I really hate is that my parents still treat me as if I was a kid.

What I dislike most is that my parents still treat me as/like a child.

What I hatest is that parents are still treat me as a child.

What I really hate is that my parents still treat me as if I was a kid.

用hate其实不恰当
这里讨厌用annoy或者bother比较好
What annoys/bothers me most is that my parents treat me as a child.

What I hate most is that my parents still treat me as if I was a child.