1. i have much more books than yours. 这句表达没问题吧。
2. Mary learns very quickly.When she learns about a new subject ,she ofen becomes [much] interested.此处为什么不用 too.
3. Despite the time of the year , yesterday's temperature was
[ hot enough] to go swimming.此处为什么不可用 so hot.
谢谢大家,你们会万福的。