有错.
应该是：My MP4 is much cheaper than yours

百度知道有我. (*^__^*)
满意请采纳,多谢!My MP4 is not more expensive than yours. 这句对么？对的。原题是：（My MP4 is cheaper than yours.） 同义句是什么 应该写哪个？应该写：My MP4 is not as expensive as yours.