他对上网很感兴趣

我也是六年级的,应该是对的.
He is interested in surfing the Internet.
(记住be interested in doing sth.)
Sally is much fatter than me.
Don't feed the animals in the zoo.
They planted many trees yesterday.
我觉得animals前面可以加the,这是我们老师说的,应该是没有问题的.