1、Doing is not so easy as saying.
做不像说那么容易。
2、Flying in the sky is great fun.
在空中飞行很好玩。
3、 Sing is better than saying.
唱比说好听。动词-ing
形式作主语时（特别是较长时），经常可以换用形式主语的句式
It is no use shouting hysterically.
歇斯底里叫没有用。
It is no good crying over spilt milk.
牛奶泼掉了哭也没用。
It was good meeting you here.
在这碰到你真好。
