蝴蝶的生长阶段: egg,caterpillar, chrysalis,butterfly 蝴蝶的食物: nectar,juice 蝴蝶和蛾子的区别: body,antennae, color 数词的用法，例如: ten,fourteen 介词的用法，例如: in,on,at 连词的用法，例如: and,but 情态动词的用法，例如:can 祈使句，例如: Make a butterfly garden! There be 句型，例如: There are about 17,000 kinds of butterfliesin the world. -般将来时的用法，例如: Here's what you'll need