【基本对话】-3 what is it? is it ……？yes, it is./No , it isn't 儿歌动画绘本课程（合集）

【基本对话】-1 greetings
https://www.bilibili.com/video/BV1LF41147jU?share_source=copy_web
【基本对话】-2 What's this/that? Is this/that……？
https://www.bilibili.com/video/BV1rq4y1e7Ud?spm_i
【基本对话】-3 what is it? is it ……？yes, it is./No , it isn't 儿歌动画绘本课程（合集）