【教材分析与导入】选修8 Unit 5 Meeting your ancestors Period 4（新课标人教A）
三维目标
Knowledge and skills
1. Understand the use of the words, expressions and sentences:
Key words and phrases: archeology, accurate, radioactivity, chronological, excavation, identity, alternative, household, date back to, look ahead, accelerate, arrest, dizzy, relief, eyebrow, cheekbone arrowhead, axe, division, affection, affectionate, patient, skilful, exhausting
Key sentence forms:
If only she had looked ahead and planned better!
She could see her mother and aunts preparing the meat of deer and pig over the five.
I think that we should… because…
I suggest we …
If…, then maybe we ought to…
Perhaps we should / could…
We must ask for help from…
What if…?
It seems likely / unlikely that…
It looks like…
It could be because…
