Unit4语法usedto人教版英语九年级全册

Usedto解析（含练习检测及答案）"usedto"是一个常用的短语，用于表示过去某个时间段内的习惯或经常性的动作或状态。它通常用来描述过去已经发生但现在不再发生的事情。用法：1."usedto"后面接动词的原形。例如：IusedtoplaythepianowhenIwasyounger.（我小时候常常弹钢琴。）TheyusedtoliveinLondon.（他们过去住在伦敦。）2."usedto"也可以用于疑问句和否定句中：Didyouusetosmoke?（你过去抽烟吗？）Shedidn'tusetolikespicyfood.（她过去不喜欢辣食。）否定形式："usedto"的否定形式是"didn'tuseto"。表示过去没有某种习惯或经常性的动作或状态：Ididn'tusetoeatvegetables,butnowIdo.（过去我不吃蔬菜，但现在我吃。）疑问形式及回答：疑问形式使用助动词"did"来构成疑问句，回答时根据情况选择肯定或否定回答：Didsheusetolivehere?（她过去住在这里吗？）Yes,shedid.（是的，她过去住在这里。）No,shedidn't.（不，她过去没有住在这里。）注意："usedto"表示的是过去的习惯或状态，现在已经改变。如果描述的是现在的习惯或状态，应该使用一般现在时。【练习】1.将下列动词短语改写成"usedto"结构的句子：a)IplayedsoccerwhenIwasyounger.______________________________________________________________________b)ShewatchedTVeveryevening.______________________________________________________________________c)TheyatepizzaonFridays.______________________________________________________________________d)Wewentswimminginthesummer.______________________________________________________________________2.将下列句子改写成否定形式：a)Sheusedtogotothatschool.______________________________________________________________________b)Weusedtovisitourgrandparentseveryweekend.______________________________________________________________________【检测】3.根据提示，完成下列句子：a)_____________you_____________wearglasseswhenyouwereyounger?b)Mydad_____________toworkbybike,butnowhedrives.4.将下列句子改写成疑问形式：a)Sheusedtoplaytennis.______________________________________________________________________b)Theyusedtogocampingeverysummer.______________________________________________________________________【提升】5.根据所给的提示，完成下列句子：a)______________you_____________afraidofspiderswhenyouwereachild?b)Mysister_____________tobeavegetarian,butshestartedeatingmeatagain.6.将下列句子改写成否定疑问形式：a)Theyusedtoliveinthathouse.______________________________________________________________________b)Didsheusedtoplaythepiano?______________________________________________________________________7.将下列句子翻译成英文：a)你小时候常常去公园吗？______________________________________________________________________b)他过去住在一个小村庄里。______________________________________________________________________c)他们以前每年都去海滩度假。______________________________________________________________________d)你过去喜欢吃辣食吗？______________________________________________________________________e)我妈妈过去总是给我讲睡前故事。______________________________________________________________________答案1.a)IusedtoplaysoccerwhenIwasyounger.b)SheusedtowatchTVeveryevening.c)TheyusedtoeatpizzaonFridays.d)Weusedtogoswimminginthesummer.2.a)Shedidn'tusetogotothatschool.b)Wedidn'tusetovisitourgrandparentseveryweekend.3.Did…use,usedtogo4.a)Didsheusetoplaytennis?b)Didtheyusetogocampingeverysummer?5.Did…usetobe;used6.a)Didn'ttheyusetoliveinthathouse?b)Didn’tsheusetoplaythepiano?7.Didyouusetogototheparkwhenyouwereachild?Heuse