■ fail to do sth 表示“没有做到某事，未能做到某事”。
从牙膏管里挤出牙膏
squeeze toothpaste out of the tube
A：It's a waste to squeeze too much toothpaste out of the tube.
从牙膏管里挤出太多牙膏真是浪费。
B：You're right. I only use a small amount when brushing my teeth.
你说得对。我刷牙的时候只用很少的量。
amount /??ma?nt/ n. 量；数量
3　肥皂
soap /s??p/
单数部落　一块肥皂 a bar/piece of soap
一盒肥皂 a box of soap
复数部落　两块肥皂 two bars/pieces of soap