I like walking better than biking.= I prefer walking to biking.
貌似改错的那个句子是出自于乌鸦喝水的故事
After the first stone was put into,the water rose a little.She put more and more stone into the jug until water came out of it.Then she had a good drink of the water.
注释：1.water是不可数名词,所以不能用a few,得用a little.同理,stone也是不可数名词,不能在词尾加s
2.stone肯定是被乌鸦放进去的,当然要用被动式咯.