4. Noisy Animals, Quiet Animals 吵闹的动物，安静的动物

The dog barks. It likes to bark. The bird sings. It likes to sing. The dog and bird are noisy. The cat meows. It meows when it is hungry. It meows when it is angry. The fish says nothing. The turtle says nothing. The mouse says nothing. The lizard says nothing. They are quiet.

狗吠叫。它喜欢吠叫。鸟儿歌唱。它喜欢唱歌。狗和鸟很吵。猫喵喵叫。它饿了就喵喵叫。它生气时喵喵叫。鱼什么也没说。乌龟什么也没说。老鼠什么也没说。蜥蜴什么也没说。他们很安静。