Our Changing Teeth-2

5 Our Changing Teeth-2 By the time we reach the age of seven, our baby teeth begin to fall out. First, the front middle teeth fall out. Then the teeth on the side, and finally the teeth at the back of our mouth. Don't worry though. As our baby teeth fall out, new teeth grow to take their place By our late teens, we will have all 32 of our adult teeth. But unlike our baby teeth, the adult teeth will be with us for the rest of our lives. That's why it's important to take care of these teeth. They are the last ones we will ever get.

我们不断变化的牙齿2 到我们七岁的时候，我们的乳牙开始脱落。 首先，前面中间的牙齿脱落。然后是侧面的牙齿，最后是口腔后部的牙齿。 不过别担心。当我们的乳牙脱落时，新的牙齿长出来取代它们的位置，在我们十几岁的时候，我们将拥有所有的32颗成年牙齿。 但与乳牙不同的是，成年牙齿将伴随我们的余生。这就是为什么照顾好这些牙齿很重要。 这是我们最后的机会了。

My front teeth fell out last week.

我的门牙上周掉了。