吃透英语课本，提升在校竞争力
n. 瀑布；陨石
v. 下降；“fall”的第三人称单数
原型：fall
He hopes the sky falls down every day!
他希望每天天都塌下来！
The can falls between two fish.
罐头落在两条鱼之间。
One day, a chick falls into the lake!
一天，一只小鸡掉进了湖里！
The wolf blows once, and the straw house falls down.
狼一吹，稻草屋就倒了。
The wolf blows again, and the stick house falls down.
狼又吹了一次，木头房子倒了。
