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1、Unit 4 I used to be afraid of the dark单元语法小专题(Grammar Focus)语法精讲2used to用法小结1used to意为“过去常常”，其中的to是动词不定式符号，后接动词原形，表示过去的习惯性动作或经常性状态，并且暗示现在已无这个习惯。used to只用于一般过去时，适用于各种人称和数的主语。如：His uncle used to go to work by bike.他的叔叔过去常骑自行车上班。They used to go swimming in the river.他们过去常在这条河里游泳。2used to的否定形式主语didnt us
2、e to或usednt(used not) to如：He used to play computer games all day.他过去常常整天玩电脑游戏。He usednt to play computer games all day.He didnt use to play computer games all day.他过去不常整天玩电脑游戏。3used to的一般疑问句形式及其答语 (1)Used主语to？答语：Yes，主语used to./No，主语usednt to.如：Her brother used to play basketball.Used her brother to
3、play basketball?Yes，he used to./No，he usednt to.(2)Did主语use to？ 答语：Yes，主语did./No，主语didnt.如：He used to go to that music club.Did he use to go to that music club?Yes，he did./No，he didnt.4used to的反意疑问句形式也有两种形式，与否定句形式类似。如：The old man used to run in the park，usednt he/didnt he? No，he usednt to./No，he did
4、nt.Yes，he used to./Yes，he did.5used to也可用于there be结构，表示“过去常有”。如：There used to be a meeting every Monday morning last month.上个月每个星期一上午总要开会。There used to be a big tree on the hill.过去这座山上有一棵大树。【拓展】(1)be/get used to意为“习惯于”，其中的to是介词，后面可接名词、代词或动词ing形式。如：Im not quite used to the weather there.我不太习惯那里的天气。Mr
5、.Brown is used to getting up at five oclock in the morning.布朗先生现在习惯在早上5点起床了。(2)be used to do sth.意为“被用来做某事”，其中的to是动词不定式符号。如：The knife is used to cut fruit.这把刀子被用来切水果。(3)be used for doing sth.意为“被用来做某事”。如：Stamps are used for sending letters.邮票是用来寄信的。语法精练.用括号内所给单词的适当形式填空。1My little brother used to_pla
6、y(play) volleyball.2Im used to getting(get) up early.What about you?3Wood is used to_make(make) desks，chairs，tables and so on.4Did you use(use) to be short?5Today，computers are_used(use) in both cities and towns.根据汉语提示完成句子，每空一词。6He used to be(以前是) a history teacher in our school.7There used to be(以前
7、有) an old temple near the village.8She is/gets used to walking(习惯于散步) after supper.9Wood is used for making/is(被用来制造) paper.10Mrs.Black has been/got used to(已习惯于) eating with chopsticks. 按要求完成下列句子，每空一词。11Jim used to sleep alone when he was a child.(改为一般疑问句)Did Jim use to sleep alone when he was a ch
8、ild?12My friend used to be really short.(改为否定句)My friend didnt use to be really short.13The little girl used to be afraid of dogs.(改为反意疑问句)The little girl used to be afraid of dogs，didnt/usednt she?14Lindas cousin used to play_computer_games(对画线部分提问) What did Lindas cousin use to do?15We used to visit the park once_a_week(对画线部分提问) How often did you use to visit the park?