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教学课件
新人教版八年级上册
Unit 1语法专项——不定代词&一般过去时
全解精讲+分层练习
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不定代词 - 概念界定
不定代词是代词的重要类别,指代不确定的人、事物、地点
也可指代不确定的数量,无具体指代对象,表泛指概念
在句中可作主语、宾语等成分
例如:I saw someone in the park.(我在公园里看到了某个人。)
不定代词 - 分类(指人类)
不定代词 用法说明+例句
someone/somebody 肯定句表“某人”,
例:Someone called you.(有人给你打电话了。)
anyone/anybody 否定/疑问句表“某人”,例:Did you see anybody here?(你在这里看到任何人了吗?)
no one/nobody 表“没有人”,含否定义,例:No one knows the answer.(没有人知道答案。)
此类代词后接单数谓语动词
不定代词 - 分类(指物类)
不定代词 用法说明+例句
something 肯定句表“某事/某物”,例:I have something to say.(我有话要说。)
anything 否定/疑问句表“某事/某物”,例:There isn’t anything in the box.(盒子里什么都没有。)
nothing 表“没有事物”,含否定义,例:Nothing is easy.(没有什么事情是容易的。)
nothing = not anything,不可叠加not
不定代词 - 分类(指地点类)
不定代词 用法说明+例句
somewhere 肯定句表“某地”,例:Let’s go somewhere warm.(我们去个暖和的地方吧。)
anywhere 否定/疑问句表“某地”,例:Did you go anywhere yesterday?(你昨天去什么地方了吗?)
nowhere 表“无处”,含否定义,例:He went nowhere last weekend.(他上周末哪儿也没去。)
nowhere = not anywhere,后接地点相关表达
不定代词 - 分类(表全体类)
表全体不定代词主要有everyone和everything,均表全部范围
everyone/everybody:指代“每个人”,
例:Everyone likes music.(每个人都喜欢音乐。)
everything:指代“所有事物”,
例:Everything is OK.(一切都好。)
不可与of连用,如不可说everyone of us,否定需换词
否定替换:everyone→no one;everything→nothing,
例:No one is late.(没有人迟到。)
不定代词核心考点1 - 定语后置
高频考点:修饰词需放在不定代词后面,不可前置
后置类型 例句
形容词后置 something important(重要的事)
不定式后置 something to drink(要喝的东西)
介词短语后置 somewhere near the park(公园附近的某地)
口诀:不定代词在后,修饰成分在前
不定代词 定语后置 专项练习
1.轻松的事 ____________
2.有趣的人 ____________
3.要读的东西 ____________
4.美丽的地方 ____________
5.教室里的某个地方 ____________
something easy
someone interesting
something to read
somewhere beautiful
somewhere in the classroom
不定代词核心考点2 - 句式转换
肯定句变为否定句、疑问句时,some-需换为any-,结合例句理解
句式 例句
肯定句 I have something to tell you.(我有件事要告诉你。)
否定句 I don’t have anything to tell you.(我没什么事要告诉你。)
疑问句 Do you have anything to tell me?(你有什么事要告诉我吗?)
no-类本身含否定,无需再加not,例:Nothing is wrong.(没什么问题。)
不定代词 句式转换 例句练习
1.原句:He saw someone in the room.(他在房间里看到了某个人。)
否定句:____________
疑问句:____________
2.原句:She has something to eat.(她有东西吃。)
否定句:____________
疑问句:____________
He didn’t see anyone in the room.
Did he see anyone in the room?
She doesn’t have anything to eat.
Does she have anything to eat?
不定代词 核心考点3 - 主谓一致
所有不定代词作主语,谓语动词均用单数,结合例句记忆
Someone is knocking at the door.(有人在敲门。)
Nothing is impossible for a willing heart.(心之所向,无所不成。)
Everyone is here for the meeting.(所有人都来开会了。)
Everything goes well today.(今天一切都很顺利。)
牢记:单主语配单谓语
不定代词 基础练习题(填空)
1.Did you find __________ (某物) in the bag?
2.________ (没有人) can answer this question.
3.I want to go ___________ (某地) cool in summer.
4.__________ (每个人) should follow the rules.
5.There isn’t ________ (任何事物) in the box.
anything
No one
somewhere
Everyone
anything
一般过去时 - 概念界定
表示过去发生的动作或存在的状态,也可表示过去经常性、习惯性的动作
常与过去时间状语连用,如:yesterday, last week, two days ago
动作已结束,与现在无直接关联,
例:I went to school yesterday.(我昨天去上学了。)
例:He played football every day last year.(他去年每天都踢足球。)
一般过去时 - be动词的变化(1)
be动词的过去式只有两种:was 和 were,结合人称变化记忆
人称/数 过去式+例句
I/he/she/it(单三) was,例:She was happy yesterday.
you/we/they(复数/第二人称) were,例:We were late for class.
否定式:wasn’t = was not;weren’t = were not,例:He wasn’t at home.
一般过去时 - be动词的变化(2)
疑问式:Was/Were + 主语 + 其他?,简略回答有固定格式
简略回答:Yes, 主语+was/were.;No, 主语+wasn’t/weren’t.
例:Was she at home yesterday?
回答:Yes, she was. / No, she wasn’t.
例:Were they in the library?
回答:Yes, they were. / No, they weren’t.
一般过去时 - 规则动词过去式(1)
变化规则 例词(原形→过去式+例句)
一般情况:直接加-ed play→played,例:He played basketball.
以e结尾:直接加-d live→lived,例:She lived in Beijing.
重读闭音节:双写尾字母+ed stop→stopped,例:He stopped the car.
判断:单音节/重读音节,辅+元+辅结构(如plan、shop)
一般过去时 - 规则动词过去式(2)
变化规则 例词(原形→过去式+例句)
辅音+y结尾:变y为i+ed study→studied,例:I studied hard.
元音+y结尾:直接加-ed enjoy→enjoyed,例:They enjoyed the party.
口诀:元y直接加,辅y变i加ed 。练习:try→______, stay→______
tried
stayed
一般过去时 - 本单元核心不规则动词
原形 过去式 例句
go went I went to the zoo.
do did She did her homework.
have had We had dinner together.
eat ate He ate an apple.
see saw I saw a bird.
无规律,需结合语境记忆,反复练习
一般过去时 - 实义动词 句式结构(肯定)
肯定句基本结构:主语 + 动词过去式 + 其他,表过去具体动作
He visited his grandparents last weekend.
We watched a movie yesterday evening.
She read a book at home last night.
时间状语可放在句首或句尾,
例:Last week, I went shopping.(上周,我去购物了。)
一般过去时 - 实义动词 句式结构(否定/疑问)
句式 结构 例句
否定句 主语 + didn’t + 动词原形 + 其他 He didn’t go to school.
一般疑问句 Did + 主语 + 动词原形 + 其他? Did you play basketball?
关键:did/didn’t后,动词必须还原,不可用过去式
一般过去时 - 核心考点 易错点提醒
不规则动词拼写易混淆,需重点熟记,避免写错
(如go→went,不可写go-ed)
did/didn’t后面,动词必须用原形,
错误:He didn’t went. 正确:He didn’t go.
be动词与实义动词句式不可混用,
错误:Were you go to park? 正确:Did you go to park?
时间状语与时态要匹配,过去时需搭配过去时间
(如yesterday,不可用now)
一般过去时 基础练习(写过去式)
1. walk → __________ 2. dance → __________
3. stop → __________ 4. worry → __________
5. go → __________ 6. see → __________
7. have → __________ 8. do → __________
walked
danced
stopped
worried
went
saw
had
did
一般过去时 基础练习(填空)
1. I ________ (go) to the park with my friend yesterday.
2. She ________________ (not watch) TV last night.
3. ________ (do) you eat breakfast this morning?
4. They ________ (play) football on the playground.
5. He ________ (see) a bird in the tree just now.
went
didn’t watch
Did
played
saw
语法综合练习1 - 单选
1. There is ______ in the box. It’s empty.
A. something B. nothing C. anything
2. She ______ to school late yesterday.
A. go B. goes C. went
3. Did you meet ______ interesting at the party?
A. someone B. anyone C. no one
B
C
B
语法综合练习2 - 单选
1. ______ in our class likes this English teacher.
A. Everyone B. Anyone C. No one
2. He ______ anything for lunch because he was busy.
A. didn’t eat B. didn’t ate C. eat
3. We went ______ beautiful on our school trip.
A. anywhere B. somewhere C. nowhere
A
A
B
语法综合练习3 - 句型转换
1. I have something interesting to tell you.(否定句)
2. He was at home last night.(一般疑问句)
3. She played the piano yesterday.(否定句)
I don’t have anything interesting to tell you.
Was he at home last night?
She didn’t play the piano yesterday.
语法综合练习4 - 完成短文
Last weekend, I _________ (go) to the zoo with my family.
We ________ (see) many animals. I met __________ (某人) from my school there. We didn’t do __________ (任何事) special, but _________ (每个人) had a good time.
went
saw
someone
anything
everyone
Unit1语法 知识点总结(一)
不定代词:牢记分类(指人、指物、指地点、表全体),掌握核心用法
定语后置:修饰词放不定代词后(如something important)
句式转换:肯定句变否定/疑问,some-换any-,no-类不含not
主谓一致:所有不定代词作主语,谓语动词用单数
结合例句记忆,避免混淆some-和any-的用法
Unit1语法 知识点总结(二)
一般过去时:表示过去的动作/状态,搭配过去时间状语
be动词变化:I/he/she/it→was;you/we/they→were,否定用wasn’t/weren’t
实义动词变化:规则动词按规则变,不规则动词需熟记
句式结构:否定句用didn’t+动词原形,疑问句用Did+动词原形
Unit1语法 易错点汇总
1. 不定代词:some-用于肯定句,any-用于否定/疑问句(特殊情况除外)
2. 定语后置:不可将形容词放在不定代词前面(错误:important something)
3. 一般过去时:did/didn’t后动词必须还原,不规则动词拼写要准确
4. 主谓一致:不定代词作主语,谓语不可用复数形式
Unit1语法 复习提示
1. 熟记不定代词用法及例句,掌握定语后置和句式转换
2. 牢记be动词和实义动词的过去式变化,尤其是不规则动词
3. 多做练习,结合语境运用语法,避免机械记忆
4. 错题整理,重点攻克易错点,提升语法应用能力
教学课件
Unit 8语法专项——一般过去时&一般现在时对比
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