英语Unit 4 Natural disasters第1课时导学案

Unit 4 I used to be afraid of the dark.

【学习目标】

掌握重点句型：Mario, you used to be short, didn’t you? Yes, I did.

He used to wear ...

She used to have...

掌握重点短语和单词：used to do sth. humorous. silent. helpful. from time to time. score.

【自主梳理】

used to do sth. 过去经常

humorous 幽默的

silent 沉默的

helpful 有用的

from time to time 时常[来源:学#科#网]

score 得分

【重点领悟】

1熟记重点单词短语。2正确使用used to

1．I used to be short when I was young. 我年轻时个子很矮。

2． —Did you use to have straight hair? 你过去是直发吗？

　　　　—Yes, I did. 是的。  

【探究提升】

1．本单元主要内容是学会used to结构。Used to +动词原形表示过去经常、以前常常，只用于过去式中，用来表示现在已不存在的习惯或状态。

例如：They used to play football together．他们过去常在一起蹋足球。（现在不在一起踢了)

2．used to的疑问形式和否定形式为Did you use to…?和I didn’t use to… 也可以用Used you to…?和I used not to…但现在多使用前者。

1．—Did Mario used to be short?

　 —Yes, he did. Now he is tall．

2．—I used to eat candy all the time, didn’t you?

　 —Yes, I did. And I used to chew gum a lot.

【巩固训练】used to   用法

【例】My uncle used to go to work on foot. 我叔叔过去常常步行去上班。

总结：used to意为“过去常常”, 暗指现在已经不存在的动作或状态, 后接动词原形。[来源:Zxxk.Com]

句式

【练习】按要求改写句子。

1. I used to be afraid of the snakes. (改为否定句)

I                  to be afraid of the snakes.

2. He used to be really friendly. (改为一般疑问句)

         he           to be really friendly?

3. Did you use to play soccer after school?(作否定回答)

No,                    .

4. I used to go to school by bus. (对划线部分提问)

                    you           to go to school?

5. They used to play basketball on the playground. (改为反意疑问句)

They used to play basketball on the playground,                    ?[来源:学科网]

【重点提示】

1. 否定句

used to的否定式通常为didn’t use to。如：[来源:学§科§网]

She didn’t use to have long hair.

2. 一般疑问句

含有used to的句子变为一般疑问句时, 可用“助动词Did+主语+use to do sth. ?”结构。肯定回答用Yes, sb. did；否定回答用No, sb. didn’t。如：

—Did you use to play the piano? —Yes, I did. /No, I didn’t.

3. 特殊疑问句

含有used to的特殊疑问句的结构为“疑问词+助动词did+主语+use to do...?”。如：

—What did you use to do? —I used to collect stamps.

4. 反意疑问句

如果陈述部分含有used to, 附加疑问部分通常使用助动词did来引导。如：

The house used to be a shop, didn’t it?

辨析

【练习】根据句意, 选择合适的短语, 并用其正确形式填空。

used to/be used to

6. The big box               hold books and magazines.

7. He               send e-mails to me, but he doesn’t this year.

8. My grandpa               going for a walk after dinner.

9. The students               swim on weekends, did they?

10. I               getting up early.

【重点提示】[来源:学#科#网]

1. be(get, become)used to doing sth. 意为“习惯于做某事”如：

She has been used to living here. 她已经习惯住在这里了。

2. be used to do sth. 意为“被用于做某事”。如：

Wood can be used to make paper. 木头能用来造纸。

【参考答案】

1. didn’t use    2. Did; use  3. I didn’t   4. How did; use

5. didn’t they    6. is used to  7 used to   8. is used to

9. didn’t use to   10. am used to

【学习反思】

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