用used to造3个句子再变成肯定句 否定句 一般疑问句 回答句 同意句
1、肯定句：He used to go to work on foot.
否定句：He didn't use to go to work on foot.
一般疑问句：Did he use to go to work on foot?
肯定回答：Yes, he used to.
否定回答：No, he didn't use to.
2、肯定句：They used to live here.
否定句：They didn't use to live here.
一般疑问句：Did they use to live here?
肯定回答：Yes, they did.
否定回答：No, they didn't.
3、肯定句：I used to do exercise.
否定句：I didn't used to do exercise.
一般疑问句：Did you used to do exercise?
肯定回答：Yes, I do.
否定回答：No, I don't.
used to用法详解
1、其基本义为“过去常常”，注意以下用法：
（1）一般不能与表示次数（如twice，three times等）或一段时间（如three months，five years等）的词语连用，但可与always，often，sometimes，never等频度副词连用。
（2）构成否定式和疑问式时有两种形式：借助助动词did（较口语化）或直接将used用作助动词（较正式）。
2、used to与would的区别
（1）两者均可表示过去习惯性的动作，有时可互换。如：
When we were children we would go skating every winter. 我们小时候，每年冬天都去溜冰。
（2）当要表示过去持续的状态或表示过去与现在的对比（即“以前这样，但现在不这样了”）时，则要用used to。
答案如下：
1、肯定句：I used to do exercise.
翻译：我过去常做运动。
I didn't used to do exercise.
否定句：我过去不常做运动。
一般疑问句：Did you used to do exercise?
你过去经常锻炼身体吗？
Yes,I do.
翻译：是的，我喜欢。
2、肯定句：I used to drink milk for breakfast.
翻译：我过去早餐常喝牛奶。
I didn't used to drink milk for breakfast.
翻译：我以前早餐不喝牛奶。
Did you used to drink milk for breakfast?
翻译：你以前早餐喝牛奶吗？
Yes,I do.
翻译：是的，我喜欢。
3、肯定句：I used to spend a lot of time in studying English.
翻译：我过去常常花很多时间学习英语。
I didn't used to spend a lot of time in studying English.
翻译：我过去没有花很多时间学习英语。
Did you used to spend a lot of time in studying English?
翻译：你过去花很多时间学习英语吗？
Yes,I do.
翻译：是的，我喜欢。
一、used
1、含义：adj. 使用过的；二手的；习惯的。动词use的过去式和过去分词。
2、用法：
used与介词to连用,表示“习惯于…的”,在句中一般用作表语,其后只能接名词、代词、动名词,不能接动词不定式。如强调由不习惯到习惯,须用get或become而不能用be。
I want to buy a used car at a cheap price.
我要以低廉价买一辆被使用过的车。
二、exercise
1、含义：n. 运动；练习；作业。vt. 运用。vi. 锻炼。
2、用法：
exercise用作名词的基本意思是“运动,锻炼”。指适用于正常人的一般性的以健身为目的的“体质锻炼”,也可指脑力方面的锻炼,还可指适用于运动员的“专业训练”。
exercise作“练习,习题”解有时可用作定语; 作“使用,应用”解时,其结果常常是有效的; 作“演习,操练”解时常用复数。
I suggest you go on a diet and take more exercise.
我建议你节食,多做运动。
三、drink
1、含义：v. 喝；饮。n. 饮料；酒；喝酒。
2、用法：
drink的基本意思是“用嘴直接喝、饮”,可以用于任何可以喝的东西,如水、茶、酒、咖啡、柠檬汁等。
drink用作及物动词时可接名词或代词作宾语,还可接形容词或介词短语作宾语补足语。用作不及物动词时常指“喝酒”,有时也可表示“喝水”。
It is harmful to your health to drink too much.
过量喝酒对你的身体有害。
四、milk
1、含义：n. 奶；牛奶；乳汁。v. 挤乳；产乳；榨取。
2、用法：
milk的基本意思是“牛奶”,也可指任何动物的“乳”,是不可数名词。
mother' milk意思是“母乳,生来爱好的东西”。
She dribbled some milk onto the cereal.
她把一些奶滴在燕麦片上。
五、spend
1、含义：n. 预算；花销。v. 花费；浪费；度过；用尽（气力等）。
2、用法：
spend的基本意思是“花费时间、精力或金钱”,可指人使用、花费金钱,度过时光,也可指某人、物、事使尽〔耗光〕力量、能量、弹药等,还可指人在某物、事方面花费金钱、精力、时间等。
spend可用作不及物动词,也可用作及物动词。用作及物动词时,只能以人作主语,接名词、代词作宾语。可用于被动结构。
The new law will put a lid on government spend.
新法律将限制政府开支。
同义句：He was a teacher in the past.
否定句：He usedn't to be a teacher. 或：He didn't use to be a teacher.
一般疑问句：Used he to be a teacher? 或：Did he use to be a teacher?
肯定回答：Yes, he used. 或：Yes, he did.
否定回答：No, he usedn't. 或：No, he didn't.
2. 肯定句：I used to get up early.
同义句：I got up early in the past.
否定句：I usedn't to get up ealry. 或：I didn't use to get up early.
一般疑问句：Used you to get up early? 或：Did you use to get up early?
肯定回答：Yes, I used. 或：Yes, I did.
否定回答：No, I usedn't. 或：No, I didn't.
3. 肯定句：They used to live here.
同义句：They lived here in the past.
否定句：They usedn't to live here. 或：They didn't use to live here.
一般疑问句：Used they to live here? 或：Did they use to live here?
肯定回答：Yes, they used. 或：Yes, they did.
否定回答：No, they usedn't. 或：No, they didn't.
参考资料： 英语牛人团
I didn't used to do exercise.
Did you used to do exercise?
Yes,I do
2.I used to drink milk for breakfast.
I didn't used to drink milk for breakfast.
Did you used to drink milk for breakfast?
Yes,I do
3.I used to spend a lot of time in studying English
I didn't used to spend a lot of time in studying English
Did you used to spend a lot of time in studying English?
Yes,I do
还要变成肯定句 否定句 一般疑问句 回答句 同意句
He didn't use to go to work on foot.
Did he use to go to work on foot?
Yes,he used to .
No,he didn't use to.
