内容正文:
Unit4 I used to be afraid of the dark.
【重点语法:used to do sth 】
【P25:1a-1c】
1. used to do sth 过去常做某事, 表示过去常做某事或过去存在的状态.
1) 肯定句: 主 + used to do sth
2) 否定句: 主 + didn’t use to do sth
(或: 主 + usedn’t to do sth)
He didn’t use to come. / He usedn’t to come.
3) 一般疑问句: Did +主+ use to do sth? Yes, 主+did. /No, 主+didn’t.
(或: Used +主语+ to do sth? Yes, 主+used to. /No, 主+usedn’t to.)
Did he use to be short? Yes, he did. / No, he didn’t.
Used he to be short? Yes, he used to./ No, he usedn’t to.
4) 反意疑问句: 前肯后否---- 主语+ used to do sth, didn’t +主? Yes, 主+did./ No, 主+didn’t.
或:主语+ used to do sth, usedn’t +主? Yes, 主+used to./ No, 主+ usedn’t to.
前否后肯---- 主语+ didn’t use to do sth, did +主 ? Yes, 主+did./ No, 主+didn’t.
或: 主语+ usedn’t to do sth, used +主 ? Yes, 主+used to./ No, 主+ usedn’t to.
You used to go there, didn’t you? Yes, I did.
You used to go there, usedn’t you? Yes, I used to.
【辨析】
1). used to do sth 过去常做某事
2). be/get used to doing sth 习惯于、适应于做某事
我习惯早起了。--- I’m used to getting up early.
3). be used to do sth = be used for doing sth 被用来做某事
这把刀是用来切面包的。---The knife is used to cut bread. = The knife is used for cutting bread.
4). be used as... 被用作......
这个词也可以用作动词。---This word can be also used as a verb.
【练一练】
( ) 1. --How is your grandma?
--She’s fine. She used to ____ TV at home after supper. But now she is used to ___ out for a walk.
A. watch; go B. watching; go C. watching; going D. watch; going
( ) 2. _______ used to______ an old bookshelf in my room.
A. There; be B. There; have C. It; be D. There; having
( ) 3. There used to be a river here,______?
A. used there B. didn’t there C. wasn’t it D. did it
2. 反意疑问句的构成: “前肯后否”或“前否后肯”
She’s done the work carefully, ___she?
A. isn’t B. wasn’t C. has D. hasn’t
【注意】►当陈述部分有seldom(很少),hardly, never, few, little, nothing, nobody等否定词时,
疑问部分用肯定形式。 They