Share 三下健康 Unit 2 (2)
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What are the first teeth called? 小寶寶長出的牙齒叫什麼？
乳牙 baby teeth
How many baby teeth do you have? 總共有幾顆乳牙？
20
How many adult teeth will you have? 總共有幾顆恆牙？
32
How many incisors? 有幾顆門牙？
8
How many canines? 有幾顆犬齒？
4
What can incisors do? 門牙可以做什麼？
切斷食物
What can canines do? 犬齒可以做什麼？
撕裂食物
What can molars do? 臼齒可以做什麼？
磨碎食物
請示範如何使用牙線
Floss your teeth
