小学英语外研社（三起点）三年级上册Module 4 Unit 2

[00:07.354]Unit 2 It's a black dog .它是一只黑狗。
[00:16.985]It's a black dog. 它是一种黑狗。  Now, it's a blue dog. 现在它是一只蓝狗。
[00:24.030]It's a red cat.  它是一只红猫。     Now, it's a green cat.现在它是一只绿猫。
[00:31.529]It's a yellow cap. 它是一顶黄帽子。Now, it's a red cap.  现在它是一顶红帽子。
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