It must be wonderful to camp in the mountains.
It'd be nice to have some rest.
It must be wonderful to camp in the mountains.
What I need is a good sleep.
I could do with some exercises
You know what ?
I'd like a change on the beach.
Oh, good idea.
That's it !
So, we are going to the sea!
想表达自己的想法，可以直接说出来嘛：
What I need is , I'd like
或者I could do with ,could do 这个片语在这里表示需要的 意思。
另外一种办法就是以建议的方式说出自己的欲求，比如：
It'd be nice to have some rest.
It must be wonderful to camp in the mountains