资源介绍：本文就必修4 Unit 5的8个重点词汇和5个重点词组进行了归纳总结，有的还加以拓展和辨析，目的是帮助学生扎实基础，提高运用语言的能力。

1．various  adj. 不同的；各种各样的；好几个
如： After graduation Zhang Hao searched for work at various factories.  (各种各样的)
 The task was very difficult for various reasons.  (不同的)
Various people have expressed disagreement with his suggestion. (好几个)
【拓展】  n. variety 多样性     a variety of…   各种各样的…
v.  vary 变化；改变    vary from…to…  从…到…变化
A job that lacks variety soon becomes tiresome. 
The price of meat varies from day to day.