这是一种“祈使句+or+简单句”的并列句，连词or相当于if not，意为“否则，不然的话”。前面的部分带有条件意味，此句可改写为：If we don’t move that bag, there may be an accident.如：Hurry up, or you’ll be late. 快点，否则你就会迟到。
6. It is nice of you.
是“It is + adj. . + 介词”结构。在这个结构中，介词of用得最多。例如：
It is very good of you to do so. 你这样做太好了。
It is so polite of him. 他太礼貌了。
[情景]此句式用来赞扬对方或向对方表示感激，意为“你真好！”如：
–Here are some flowers for you.
–It’s nice of you. Thank you very much.
Thanks for your help. It’s really nice of you.
[解析] 该句式还可扩展为It’s (That’s ) + adj. + of sb. + to do sth.。这类形容词有nice, good, kind, clever, right等。如：
It’s very kind of you to come and see me.您来看我，真太感谢了。
That’s very kind of you to say so.谢谢您这么说。
注意：表示性质、品格、品德之类的形容词，后面的介词用of.其他的形容词（表示大小、方位、形状等普通形容词）多用for或者to. 例如：
The sun is far for us to see. 太阳看上去离我们太远了。
It is very easy for me to do so. 这样做对我来说太容易了。
8. With the medicine box under her arm. Miss Zhao hurried off to look after the man. 赵老师腋下夹着药箱匆忙赶去照顾那个男的。
With the medicine box under her arm是介词短语作伴随状语。With在此意为“夹着”，它和其后的名词或代词构成介词短语，表示附带情况。如：
A woman looked worried, with a child in her arms.一个女人抱着个孩子，显得很着急。
He likes sleeping with the window open．他喜欢开着窗户睡觉。
With the light on, we began to work again．灯亮了以后，我们又开始干了起来。
With these words, the tiger jumped into the river．说着这些话，老虎跳进了河里。
另外，“with +名词”这一结构在句中可作后置定语。如：
China is a country with a long history.中国是一个历史悠久的国家。
Lesson 97 多媒体教学设计方案
Teaching Objectives:
Grasp the general question of past continuous tense and some words and phrases.
1. 句型：
1）You’d better go to bed earlier tonight．
2） A woman saw it happen when she was walking past．
3）My wallet dropped on the ground when I was walking in the park
4）You look tired today.
2. Words and expressions
play the piano/violin/guitar/flute, watch video tape, review, look tired/young/worried, mend, forget sth./forget to do sth. had better(not) do sth., novel, accident, wallet, walk past, give sth. (back) to sb.
3．过去进行时态的陈述句和疑问句
We were not traveling too fast.
Was she traveling too fast?
Teaching procedures:
Step 1 Revision
（学生活动）让学生就What were you doing at … yesterday?互相提问复习过去进行时。
（录像演示）演示过去进行时表示过去某个时刻正在进行的动作，让学生进行模仿练习
Step 2Ask and answer
Ask the students Was he watching TV at eight o’clock at night? . Help students to answer “Yes, he was.” or “No, he wasn’t.”
（录像演示）情景演示过去进行时的疑问形式，然后由学生小结出过去进行时态陈述句式和疑问句式的构成：was/were +主语+ving+其它
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