transformation

Re: transformation
1. I like A flower more than I like B flower.

(Can I change it to "I like flower A more than B" without change in meaning?)

Yes. Most people would do this in conversation.

2. I am fonder of movies than dramas

(Can it be change it to "more fond"?)

Yes, but why would you do that?

3.I gain more understanding of why Taiwan's students struggle for English than most of native-English teachers.

Hardly anybody would say this.

(Can I change to "I gain more understanding of why Taiwan's students struggle for English than most native-English teachers" without change in meaning?)

Most people would say this.

Many thanks, Contrex.