P16~P20
1. alive，living，lively的词义辨析
2. allow doing和allow sb to do// allow和permit辨析
3. alone和lonely的区别
4. aloud和loudly的区别
5. alternative两种词性两种词义
6. altogether三种词义
7. among between的区别
8. analysis，analyst，analyze词性及词义
9. anger和angry
10. angle和angel
11. announce，publish，claim，declare的区别
12. annual和anniversary词性和词义
13. another，other，others和the other的区别
14. answer同义词key加介词to而非of
15. anxiety和anxious词性和词义
16. any 两种词性三种词义
17. 翻译下面的单词和词组：
Ankle
Be angered by
Do/ carry out/ conduct an analysis
In large/ small amount
All over
In all
Not at all
Let alone