Unit 12 Life is full of the unexpected.
The Third Period Section A 3a-3c

【Teaching aims】
一、听、说、读、写以下词汇：miss, unexpected, block, worker, above, burn, alive, till, west, stare, disbelief, take off网
二、通过学习，口、笔头掌握下列句型：
1. Life is full of the unexpected.
2. By the time I got to the airport, my plane to New Zealand had already taken off.
3. Before I could join the others outside to see what was going on, the first plane had already hit my office building. .com
4. We stared in disbelief at the black smoke rising above the burning building. 
5. I felt lucky to be alive.
6. The other planes were full so I had to wait till the next day.21·cn·jy·com
三、1.能在语篇当中理解过去完成时态的句子，并能够在真实的语境中使用。
    2.能理解一般过去时与过去完成时的区别。
四、能通过交流分享难忘的经历，一是增进彼此的了解，学会沟通；
            二是对所发生的事情能辩证的去看待。
Difficulties：理解一般过去时与过去完成时的区别。
【Teaching steps】
 Warm-up and revision（课堂热身和复习）
1. Discuss.
1. Did anything unexpected happen to you before?
__________________________________________
2. What and when did it