【学习目标】
1. Grasp the important words and phrases in the two units and improve your ability to express yourself in English.
2. Learn the method of constructing knowled ge trees through self-study and cooperative exploration.
3. Enjoy the beauty of English with a strong passion.
【课前预习】
**************************** Book 2 Unit 4基础知识****************************
Ⅰ重点词汇
1. suggest
(1) vt.建议（用should do 的虚拟语气）
He suggested our going for a walk. 他建议我们去散步。
It’s suggested that we (should) take measures at once. 人们建议我们立即采取措施。
(2) vt. 暗示，表明（用陈述语气）
Her expression suggested thats he had told a lie. 她的表情暗示她说谎了。
注意：n. suggestion, advice, proposal作“建议”讲，其后的名词性从句也要用虚拟语气。
