UNIT 1 HELLOHELLO LESSON 1 DIALOGY WORDS cat 猫 dog 狗 ball 球 fish 鱼 a ca t a dog a ba ll a fi sh no ca t no dog no ba ll no fi sh PLAY THE GAME LESSON 2 apple apple s egg eggs an apple an egg 连线 apple ball a cat an dog egg fish A a B b C c D d E e F f 练习题