used to 的用法微课教案

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used to的用法解析

1. 基本用法特点

used to的意思是“过去经常”,暗指现在已经不存在的动作或状态, 后接动词原形。

其中的to是不定式符号,不是介词,所以其后接动词原形(不接动名词):

He used to live in Paris. 他过去一直住在巴黎。

I used to write poetry when I was young。我年轻时常常写诗。

2. 如何构成否定式和疑问式

可像普通动词那样借助助动词did构成否定式和疑问式;

used to作为情态动词,也可直接在used后加not构成否定式,直接将used置于句首构成疑问式

He didn’t use to \usedn’t to come. 他过去不常来。You used to go there, didn’t\ usedn’t you? 你过去常到那儿去,是吗?

Did she use to wear glasses? Yes,she did.\No,she didn’t.

Where did you use to live? 你过去是住哪儿的?

【注】在现代英语中,used to的否定式和疑问式通常借助助动词did构成(特别是在口语和非正式文体中),而直接将used作为助动词用通常被认为是非常正统或过时的用法。

3. used to与副词连用时的位置

与often, always, never等副词连用时,通常置于副词之后,也可置于副词之前:

I always used \ used always to be afraid of dogs. 我过去老是怕狗。

He often used \ used often to sit outside the door of his house. 他过去常坐他家门口。

注意,它通常不与具体表示次数(如twice, three times 等)或一段时间(如three months, five years等)的词连用:

正:I went to Paris three times. 我去过巴黎3次。

误:I used to go to Paris three times.

(1) used to 意为“过去经常”,其中的 to 是不定式符号,后接动词原形:

(2) be used to 意为“习惯于”,其中的to是介词,后接动词要用动名词:

He used to live in the city. 他过去一直住在城里。

He is used to living in the countryside now. 他现在习惯于住在乡下。

【注】①若要强调从不习惯到习惯的过程,可用 get, become 等代替动词 be:

He has got used to looking after himself. 他已习惯于自

己照顾自己。

② be used to 中,used是动词 use的被动语态结构 (此时意为“被用来”,其中的 to 为不定式符号,其后要接动词原形):

A knife is used to cut things. 刀子用来切东西。

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

按要求完成下列各题:

( )1.My father ____ to work,but now he goes to work by car.

A.liked to

ed to walk

C.be used to walking ()2.- you to play computer games a lot

every day?

-Yes,but now I spend most of my time .

Because I'm in Grade 3.

A. Did ,used ;playing

B. Were ,used;study

C. Did, use;studying

3.Amy to be lazy,but now she is so hard−working

That she wants to be a person.(use)

4.许多学生过去常常不穿校服,但是现在习惯穿校服去学校。

Many students didn't use to wear the school uniforms,

but now they are used to wearing them to school.

5.钢笔用来写字。A pen write.

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