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课件网) 人教版九年级英语全一册 unit 13-unit 14 重点语法专项复习 unit 13 1.used to 的用法 1.定义:表示过去存在某种状态或者过去经常性、习惯性的动作, 或表示过去存在某种状态。暗含着这种状态或动作目前 已不存在的意思。 2.结构:used to+动词原形; 否定形式为didn't use to do sth.或usedn't to do sth.; 一般疑问形式为Used sb. to do sth. 或Did sb. use to do sth. ; 附加疑问句式为usedn't sb.或didn't sb.。 Grammar 1.基本结构: be+及物动词的过去分词 2.定义:被动语态表示主语为谓语动词动作的承受者。 3.几种常用时态的被动语态的结构: 一般现在时 am/is/are+及物动词的过去分词 一般过去时 was/were+及物动词的过去分词 一般将来时 will/shall be+及物动词的过去分词 2.被动语态 的用法 Grammar 3.情态动词 的用法 1.情态动词+动词原形 2.情态动词没有人称和数的变化。 3.常用的情态动词有:can/could, may/might, must/have to,should/ought to, would,need 等。 Grammar 1.构成: am/ is/are+动词-ing形式 2.定义:表示现在正在进行或发生的动作,也表示现阶段或当前一段时间内正在进行的动作。 3.常见的标志词或时间状语有:now,look, listen, these days等,有时也需要根据上下文判断。 4.一些表示位置移动的动词,如go,come, leave等常用现在进行时表示将来。 4.现在进行时 的用法 Grammar 1.构成: have/has+动词的过去分词 2.定义: 1)表示过去发生的某一动作对现在造成的影响或结果, 常与already,never,ever,just, before,yet,so far等连用。 2)表示过去已经开始,持续到现在的动作或状态, 常与for+时间段, since+时间点, since引导的从句(过去时), since+一段时间+ago, how long等时间状语连用。 5.现在完成时 的用法 5.现在完成时 的用法 ①“have/has been to+地点名词”表示“曾经去过某地”, 强调现在已经回来,不在那里了。 ②“have/has gone to+地点名词”表示“去了某地”, 强调还没有回来,可能在去的途中,也可能在目的地。 ③“have/has been in/at+地点名词” 表示“待在某地”。 e.g: She has been to Shanghai.她到过上海。(现在不在上海) She has gone to Shanghai.她去上海了。(现在已在上海或在去的途中) She has been in Shanghai for 3 days. (待在上海3天了) Exercises 1. He _____ go out with his parents, but now he _____ staying at home alone. A. used to; is used to B. is used to; used to C. used to; used to D. is used to; is used to 2.He promised to pick me up at the school gate.However, he _____ yet. A. didn’t arrive B. doesn’t arrive C. isn’t arriving D. hasn’t arrived 3. Ba Jin, one of the greatest writers in China, ___ as “People’s Writer”. A. is regarded B. has regarded C. is regarding D. regards 4.—At present, one of the best ways to study is working in groups. —More chances _____ to students to learn from each other. A. offer B. are offered C. have offered D. are offering Exercises 5. Look! The police _____ the food onto the bank of the river. A. am carrying B. is carrying C. are carrying D. are carried 6.— Mr. Li will check our homework this afternoon. _____ you _____ it — Not yet. I’m doing it right now. A. Do; finish B. Had; finished C. Will; finish D. Have; finished 7.Children under 12 years old_____ ride sharing bikes. It's too dangerous. A. ... ...