Unit4 Whats in my hat?Whats this? A turtle A pig A fish An applebaseball clock Its a tableWhats on the table now? A turtle A pig A fish A bird An apple A clock A baseball Where is the bird? It is on the rock. Wheres the snake? Its under the rock. Wheres the frog? Its in the water. Where is the squirrel? Its behind the tree. Wheres Mocky? He is in front of the tree. Hes in front of the tree.Unit 4 Whats in my hat? 介词: on in under 在. 上面 在里面 在下面 behind 在后面 例:on the bag under the chair 在书包上 在椅子下面 A