“我想，这个一定很有趣。我对此很感兴趣。”英语怎么说？

Question

谢谢。

Answer 1

I think it must be very interesting.
I am interested in it.

interest 有趣 ， 形容人感到有趣是 interesed
某物有趣是 interesting.

Answer 2

I think it must be fun.
I am interested in it.

Answer 3

I believe that this must be very interesting....I am very interested in it.

Answer 4

I think it must be fun that I really interest in it.

Answer 5

I think it must be wonderful.I am interested in it.