Unit 4 I used to be afraid of the dark. used to的含义及用法教学设计

Unit 4 I used to be afraid of the dark.（used to的含义及用法）教学设计 人教版九年级英语全册
教学内容
used to的含义及用法
教学目标
介绍used to的定义及三种句式变化：否定句，一般疑问句和反意疑问句。
课程重难点
重点介绍used to 的否定句、一般疑问句及反意疑问句的变法。
教学过程
一、讲解used to 的含义及用法
1、用两张学生照片比较12年前与现在比较，引出used to。
2、used to do sth 的意思为过去常常（做某事），过去曾经。用于表示过去的某种习惯性的行为动作或存在的某种状态。强调与现在对比，现在不做了。
3、to为不定式符号，后跟动词原形。
4、used to只用于一般过去时态，不能用于一般现在时态，没有人称和数的变化。
eg :Gina used to be a shy girl,but now she is outgoing.
讲解used to 的否定形式
1、结构为：主语+didn’t use to do sth
Mike didn’t use to study hard.
He didn’t use to smoke.
改成否定句练习
Grandma used to grow strawberries on her farm.
Grandma didn’t use to grow strawberries on her farm.
You used to like history
You didn’t use to like history.
讲解used to 的一般疑问句形式，并作肯定或否定回答。
结构： Did +主语+use to +do sth
Yes, sb did/ No,sb didn’t.
_Did you use to go to museums
_Yes,I did/ No, I didn’t.
改成一般疑问句练习
I used to collect tea sets (作肯定回答）
Did you use to collect tea sets
Yes, I did.
They used to play basketball at school.(作否定回答）
Did they use to play basketball at school
No, they didn’t.
讲解used to 的反意疑问句形式
结构：主句（肯定句），didn’t +人称代词？
主句（否定句），did +人称代词？
归纳：前肯后否，前否后肯。
Your brother used to have noodles for breakfast.didn’t he
你哥哥过去早餐常吃面条吗？
She didn’t use to walk to school,did she
她过去不常走路去学校，是吧？
改成反意疑问句练习
She used to walk to school.
She used to walk to school, didn’t she
He didn’t use to have breakfast in the morning.
He didn’t use to have breakfast in the morning, did he
讲解used to do；use...to do； be/get used to (doing) sth,；sth be used to do 的区别并举例。
used to do sth 过去习惯性的动作或存在的状态
Did he use to wear glasses
use ...to do 用......来做.....
We use this knife to cut fruit.
be/get used to (doing) sth 习惯于.....to 是介词，后接+v-ing.
This knife is used to cut fruit.
课堂总结
used to的否定句：Sb didn’t use to +动词原形
used to的一般疑问句： Did sb use to +动词原形
used to的反意疑问句 ：Sb used to+动词原形，didn’t sb
Sb didn’t use to+动词原形, did sb