a. 使用过的, 二手的, 习惯的相关词组: be used up It used to be said that... A is used as B

• be used for/ be used as/ be used by
  
  
  Ⅰ. be used for “（被）用来做……”，强调用途或作用。
  
  Ⅱ. be used as “（被）作为……而用”，强调被当作工具或手段来用。
  
  Ⅲ. be used by “被……使用”，by后跟人物，强调使用者。如：
  
  ① Keys are used for opening locks. 钥匙是用来开锁的。
  
  ② “Swim” can be used as a noun. “Swim”可作名词用。
  
  ③ Recorders are often used by English teachers. 英语教师经常使用录音机。
  
  ④ Wood can be used for making paper. 木材能用来造纸。
  
  
  
  

use/useful/useless/usage/abuse/used/usual/function
记忆：
1. use [ ju:s ] vt. 使用, 利用, 耗费 n. 使用, 利用, 用途 Use your heard, then you will find a way. 动动脑筋，你就会有办法的。 use sth use sth as sth use up sth用光 be used to do sth被用来 be used to doing sth习惯于 used to do sth 过去常
2. useful [ 5ju:sful ] adj. 有用的, 有益的 Not every piece of advice is useful. We must decide one by ourselves. 不是每一条建议都有用。我们必须自己决定取舍。
3. useless [ 5ju:slis ] adj. 无用的, 无效的, 无益的 It’s useless regretting. 后悔是没有用的。
4. usage [ 5ju:zidV ] n. 使用, 用法 If you don’t know the usage of the word, I can show you how to use it. 如果你不知道这个单词的用法，我可以教你。
5. abuse [ E5bju:z] ab-use n. 滥用, 虐待, 辱骂 n. 滥用, 虐待, 辱骂 No one on the earth can be abused, whether a friend or an enemy.世界上没有哪个人可以被虐待，不管那人是朋友还是敌人。
6. used [ ju:st ] adj. 旧的, 用旧了的 The used things can go to the flea market. 用旧的东西可以拿到跳蚤市场去。
7. used to do sth. 过去常常（现已不再） China used to be bullied, which we should keep in mind 中国曾经被欺侮，这一点我们不能忘记。
8. would [ wud, wEd, Ed, d] 过去常 I remember she would cry when she was worried. How about now?我记得她过去着急的时候常会哭，现在怎么样？
9. be/get used to doing sth. 习惯于 It’s not easy for some people to get used to a foreign culture. 习惯外国文化对一些人而言并不容易。
10. usual [ 5ju:VuEl ] use-ual, adj. 平常的, 通常的, 惯例的 as usual, 跟往常一样 He took his usual seat and ordered two glasses of beer. 他坐了平常那个座位，要了两杯啤酒。
11. function [ 5fQNkFEn ] n. 官能, 功能, 作用 How many functions can you name of water?你能说出多少种水的功能？
另类阅读：
The multi-media is very useful in teaching, but it doesn’t means the traditional methods are useless and it can be abused. Sometimes the usual pictures can be of greater use, and even used cup may turn out to be more helpful.