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　　Unit 4 Fact and Story学案
　　【本讲教育信息】
　　一. 教学内容：
　　第四单元  第一部分
　　学会使用情态动词could表述某人在过去某一阶段所具有的能力，学会描述过去正在发生的事情的经过。
　　二. 本周教学重点和难点:
　　1. To use could to talt abilities in the past.
　　2. To describe past events using the past continuous.
　　3. Some very important expressions.
　　三. 具体内容:
　　（一）Could- abilities
　　1. 基本用法：表示某人在过去某一时期所具备的某种能力。
　　He could play the violin when he was seven.
　　She couldn’t dress herself when she was three.
　　Could they speak French?
　　Yes, they could.
　　2. 基本构成: could do sth.
　　He could ride a bike when he was a little boy.
　　He could not (couldn’t) ride a bike when he was a little boy.
　　Could he ride a bike when he was a little boy?
　　Yes, he could. No, he couldn’t.
　　3. Complete the blanks with could or couldn’t.
　　Albert Einstein(1879-1955) was a German-born American physicist, the creator of the relativity. He        talk until he was three years old.
　　Tiger Woods, the American golf champion, was born in 1975. He         play golf as soon as he could walk.
　　Horatio Nelson(1758-1805) was a British naval commander during the Napoleonic Wars. He spent all his life at sea but he         swim.
　　（二）Past continuous
　　1. 基本用法:
　　（1）表示过去某一时刻或某一段时间里正在进行的动作。
　　I was watching TV at nine o’clock yesterday.
　　Last week we were working in the countryside.
　　（2）可以表示过去预计将要发生的动作，但只适用于start, fly, come, go, leave, arrive, stay, return等动词。