1 不可数名词的识别
2 不可数名词的量化：数词/冠词+量词+of+不可数名词
two bottles of water 两瓶水
two pieces of paper 两张纸
three pieces of bread 三片面包 DF0rlPSjkv7poArzhuvRTJhVEBoEmwIbOAgYiXLKab/GTA9TzT5PW4bBmhZtkbqK
