Let's learn. 学一学。
Can I have some water, please? 请问我能喝些水么？
Here you are. 给你。
cake 蛋糕
fish 鱼
rice 米饭
water 水
Let's do. 做一做。
Drink some water.  喝水。
Eat some fish.  吃鱼。
Eat some rice.  吃米饭。
Cut the cake. 切蛋糕