So here is a riddle for you.

A friend of mine asked me: 你想要我改正你的汉语?

To which I (with glee) responded: 一定想要

To this, he said that I can only say 一定想 or 一定要 but not 一定想要.

So, why can he use 想要 in the question, but I can't use it in my answer?

Are there other verbs where this happens?

Your thoughts please :-)

A friend of mine asked me:

你想要我改正你的汉语?

To which I (with glee) responded: 一定想要

To this, he said that I can only say 一定想 or 一定要 but not 一定想要.

So, why can he use 想要 in the question, but I can't use it in my answer?

Are there other verbs where this happens?