内容正文:
人教英语七下Unit7语法讲解和练习
核心语法:一般过去时(Simple Past Tense)
一、语法点:一般过去时
1. 核心概念
一般过去时是表示过去时间范畴的基础时态,核心用法有两层:
一是描述过去某个具体时间点发生的动作(动作已结束,与现在无直接关联);
二是表示过去某段时间内存在的状态。该时态的关键特征是“时间上属于过去”,且常搭配明确的过去时间状语,以区分一般现在时。
补充说明:即使没有明确的过去时间状语,若语境暗示动作发生在过去(如叙述过去的经历、故事),也需用一般过去时。例:I met an old friend in the street.(我在街上遇到了一位老朋友。——语境暗示动作已发生)
2. 时间标志词(分类梳理+用法提示)
一般过去时的时间标志词可分为“明确过去时间”和“模糊过去时间”,不同类型在句中位置有差异,具体如下:
类型
常见标志词
位置说明
例句
明确过去时间
yesterday(昨天), last week/month/year(上周/月/年), the day before yesterday(前天), a week ago(一周前), just now(刚才), in 2023(在2023年), at 9 o’clock last night(昨晚9点)
可位于句首或句末,位于句首时需用逗号分隔
Last week, we went on a school trip.(上周,我们参加了学校旅行。)/ I finished my homework just now.(我刚才做完了作业。)
模糊过去时间
once(曾经), before(以前), ago(……以前,需搭配时间段), in the past(在过去)
ago必须位于时间段后;before可单独使用或接时间点;once多位于句中或句末
I have been there once.(我去过那里一次。)/ She visited Beijing three years ago.(她三年前去过北京。)/ I met her before.(我以前见过她。)
3. 句型结构(补充细节+易错提醒)
一般过去时的句型结构需根据“实义动词”和“be动词”分别变化,核心逻辑是“时态变化体现在动词上”,具体如下:
句式
结构
(实义动词/be动词)
例句
易错提醒
肯定句
1 实义动词:主语 + 动词过去式 + 其他
② be动词(was/were):主语 + was/were + 表语
I visited the zoo with my family.(实义动词)It was terrible.(be动词,单数主语)There were robots.(be动词,复数主语)
be动词的过去式需根据主语单复数变化,不可与实义动词过去式连用(如错误:He was worked hard.)
否定句
1 实义动词:主语 + didn’t(did not) + 动词原形 + 其他
② be动词(was/were):主语 + wasn’t/weren’t + 表语
He didn’t give the tourists the right directions.(实义动词)I wasn’t late yesterday.(be动词,单数主语)They weren’t at home last night.(be动词,复数主语)
didn’t后必须接动词原形,不可接过去式(如错误:He didn’t visited the park.)
一般疑问句
1 实义动词:Did + 主语 + 动词原形 + 其他?
② be动词(was/were):Was/Were + 主语 + 表语?
Did you go on a school trip?(实义动词)
Was your weekend great?(be动词,单数主语)
Were they in the classroom?(be动词,复数主语)
用Did开头的疑问句,主语后的动词必须变回原形;be动词开头的疑问句,需根据主语单复数选择was/were
特殊疑问句
1 实义动词:疑问词 + did + 主语 + 动词原形 + 其他?
② be动词(was/were):疑问词 + was/were + 主语 + 其他?
What did you do the day before yesterday?(实义动词)
How was your weekend?(be动词,单数主语)Where were they last night?(be动词,复数主语)
疑问词(what/when/where等)需根据提问对象选择,后接对应句型结构,不可混淆实义动词和be动词的用法
4. 动词过去式变化规则(拓展细节+特殊情况)
(1)规则变化
情况
变化方式
例词
补充说明
一般情况
直接加-ed
work → worked, walk → walked, play → played
发音规则:清辅音后读/t/(worked /wɜːrkt/),浊辅音和元音后读/d/(played /pleɪd/),/t/ /d/后读/ɪd/(wanted /ˈwɑːntɪd/)
以e结尾
直接加-d
live → lived, like → liked, love → loved
无需去e,直接加d即可,避免误写为“livied”“likied”
辅音字母+y结尾
变y为i,加-ed
study → studied, worry → worried, carry → carried
若y前是元音字母(a/e/i/o/u),则直接加-ed(play → played, enjoy → enjoyed)
重读闭音节(辅元辅结尾)
双写最后一个辅音字母,加-ed
stop → stopped, plan → planned, shop → shopped
需满足“重读+闭音节+辅元辅”三条件,双音节词需重读在末尾(如prefer → preferred)
(2)不规则变化(常见高频词,需单独记忆)
不规则动词过去式无统一规则,需分类记忆,以下为单元核心高频词,补充用法场景帮助理解:
动词原形
过去式
例句
记忆提示
see
saw
I saw a film the day before yesterday.
与“draw → drew”“know → knew”为同类变化(元音o/e变为aw/ew)
go
went
We went on a school trip.
特殊变化,无同类规律,需单独牢记
have
had
I had some bread for breakfast.
与“has → had”统一,过去式不变
do
did
What did you do?
助动词do/does的过去式,用于否定句和疑问句
get
got
I got on the wrong bus.
与“forget → forgot”“begin → began”为同类变化(元音e变为o)
leave
left
I left my book on the bus.
与“keep → kept”“sleep → slept”为同类变化(结尾变为ft)
feel
felt
He felt bad about that.
与“leave → left”变化一致,均为“eel/ee → elt”
is/am
was
It was terrible.
单数主语(he/she/it/单数名词)对应的be动词过去式
are
were
There were robots.
复数主语(we/you/they/复数名词)对应的be动词过去式
5. There be 句型的一般过去时(拓展用法+句型转换)
There be句型的一般过去时核心是“将be动词改为过去式was/were”,遵循“就近原则”(be动词的单复数由靠近它的名词决定),具体用法如下:
句型
结构
例句
句型转换(否定/疑问)
单数/不可数名词
There was + 单数/不可数名词 + 其他
There was a space exhibition.(单数名词)There was some milk on the table.(不可数名词)
否定句:There wasn’t + 名词
疑问句:Was there + 名词?(回答:Yes, there was./No, there wasn’t.)
复数名词
There were + 复数名词 + 其他
There were robots.(复数名词)There were two bottles of milk.(复数短语)
否定句:There weren’t + 名词
疑问句:Were there + 名词?(回答:Yes, there were./No, there weren’t.)
6. 易错点汇总(单元核心难点)
· 混淆实义动词和be动词的句型:实义动词的否定/疑问句需借助did,be动词直接变wasn’t/weren’t或提前was/were,不可混用(错误:Did he was late? 正确:Was he late?)。
· 动词过去式重复变化:did后接动词原形,不可再用过去式(错误:He didn’t went to school. 正确:He didn’t go to school.)。
· 不规则动词记忆错误:重点区分易混淆词(如see→saw vs look→looked,go→went vs get→got),避免张冠李戴。
· There be句型的就近原则:当名词前有数量短语时,be动词单复数由“数量短语后的名词”决定(如There was a box of apples. 核心名词box为单数)。
· 时间状语搭配错误:ago必须接时间段(错误:I visited her ago. 正确:I visited her two days ago.);last后直接接时间名词(错误:last week ago 正确:last week)。
二、语法综合练习
一、单项选择(10题)
1. —_____ you see anything interesting at the science museum yesterday?
—Yes, I did.
A. Do B. Did C. Are D. Were
2. He _____ bad about giving the wrong directions.
A. feel B. feels C. felt D. feeling
3. We _____ to a wastewater plant on our school trip.
A. go B. went C. goes D. going
4. —What did you do the day before yesterday?
—I _____ the zoo with my family.
A. visit B. visited C. visits D. visiting
5. —How _____ your weekend?
—It was terrible. I got on the wrong bus.
A. is B. are C. was D. were
6. I _____ my book on the bus yesterday.
A. leave B. left C. leaves D. leaving
7. —Did you go on a school trip a week ago?
—_____, we did.
A. Yes B. No C. Sure D. OK
8. There _____ a space exhibition at the museum yesterday.
A. is B. are C. was D. were
9. They _____ a day on a chicken farm last month.
A. spend B. spent C. spends D. spending
10. The doctor _____ working at ten o’clock last night.
A. stop B. stopped C. stops D. stopping
二、用括号内所给动词的适当形式填空(10题)
1. Last week our class ______ (go) on a school trip to Jinggangshan.
2. In a museum, we ______ (learn) about important people.
3. We ______ (see) many things such as old photos and paintings.
4. We ______ (walk) along the mountain roads.
5. We ______ (think) about the past.
6. Many people back then ______ (work) hard.
7. It ______ (be) a day to remember.
8. I ______ (see) my favourite actor in a film the day before yesterday.
9. They ______ (spend) a day on a chicken farm last month.
10. There ______ (be) two bottles of milk on the table a few minutes ago.
三、连词成句(5题)
1. my favourite actor, the day before yesterday, I, see, in a film
_____________________________________________________________________
2. they, a day, spend, on a chicken farm, last month
_____________________________________________________________________
3. two bottles of milk, on the table, a few minutes ago, there, be
_____________________________________________________________________
4. last night, stop, the doctor, work, at ten o’clock
_____________________________________________________________________
5. Ms Li, last Wednesday, meet, in the street, one of her friends
_____________________________________________________________________
四、按要求改写句子(10题)
1. I saw my favourite actor in a film.(改为一般疑问句并作肯定回答)
—_____ you _____ your favourite actor in a film?
—Yes, I _____.
2. They spent a day on a chicken farm.(改为否定句)
They _____ _____ a day on a chicken farm.
3. There were two bottles of milk on the table.(改为一般疑问句并作否定回答)
—_____ _____ two bottles of milk on the table?
—No, _____ _____.
4. The doctor stopped working at ten o’clock.(对划线部分提问)
_____ _____ the doctor _____ working?
5. I went to the zoo with my family.(对划线部分提问)
_____ _____ you _____ with your family?
6. It was a day to remember.(改为否定句)
It _____ _____ a day to remember.
7. Did you go on a school trip?(作否定回答)
No, I _____.
8. We learned about important people.(对划线部分提问)
_____ _____ you _____ about?
9. They walked along the mountain roads.(对划线部分提问)
_____ _____ they _____?
10. He felt bad about that.(对划线部分提问)
_____ _____ he _____ about that?
三、答案与解析(补充易错点提示)
一、单项选择
1. B
解析:yesterday是过去时间标志词,实义动词see的一般疑问句需用Did开头,对应语法点3的句型结构。
2. C
解析:描述过去的感受,需用feel的过去式felt,对应语法点4的不规则动词变化。
3. B
解析:school trip是过去发生的动作,go的过去式为went,属于不规则变化,避免误写为goed。
4. B
解析:the day before yesterday提示用一般过去时,visit的过去式为visited,规则变化直接加-ed。
5. C
解析:your weekend为单数主语,be动词的过去式用was,对应语法点3中be动词的句型结构。
6. B
解析:yesterday提示用一般过去时,leave的过去式为left,属于不规则变化,对应语法点4的高频词。
7. A
解析:一般疑问句Did开头,肯定回答用Yes,否定回答用No,符合语法点3的句型回答规则。
8. C
解析:a space exhibition为单数名词,There be句型的一般过去时用was,遵循就近原则。
9. B
解析:last month提示用一般过去时,spend的过去式为spent,属于不规则变化,对应语法点4。
10. B
解析:last night提示用一般过去时,stop为重读闭音节动词,过去式双写尾字母加-ed,即stopped。
二、用括号内所给动词的适当形式填空
1. went(go的不规则过去式,注意与get→got区分)
2. learned/learnt(learn的过去式有两种形式,均正确,属于不规则变化)
3. saw(see的不规则过去式,对应语法点4的高频词)
4. walked(规则变化,直接加-ed,发音为/wɔːrkt/)
5. thought(think的不规则过去式,注意拼写变化,避免误写为thinked)
6. worked(规则变化,直接加-ed,back then提示过去时间)
7. was(it为单数主语,be动词过去式用was,对应语法点3)
8. saw(the day before yesterday提示过去时,see→saw为固定不规则变化)
9. spent(spend的不规则过去式,last month提示过去时间)
10. were(two bottles为复数短语,There be句型用were,遵循就近原则)
三、连词成句
1. I saw my favourite actor in a film the day before yesterday.(主语+谓语过去式+宾语+状语,时间状语放句末)
2. They spent a day on a chicken farm last month.(主谓宾结构,last month放句末,对应语法点2的时间状语位置)
3. There were two bottles of milk on the table a few minutes ago.(There be句型的一般过去时,时间状语放句末)
4. The doctor stopped working at ten o’clock last night.(主谓宾结构,时间状语按“小时间+大时间”排列)
5. Ms Li met one of her friends in the street last Wednesday.(主谓宾结构,地点状语在前,时间状语在后)
四、按要求改写句子
1. Did; see; did(实义动词的一般疑问句,Did开头,动词变原形,回答用did呼应)
2. didn’t spend(实义动词的否定句,借助didn’t,spend变原形,避免误写为didn’t spent)
3. Were there; there weren’t(There be句型的一般疑问句,were提前,否定回答对应there weren’t)
4. When did; stop(对时间提问用when,实义动词句型借助did,stop变原形)
5. Where did; go(对地点提问用where,借助did,go变原形,对应语法点3的特殊疑问句)
6. wasn’t(be动词的否定句,is的过去式was变wasn’t,无需借助didn’t)
7. didn’t(Did开头的一般疑问句,否定回答用No, 主语+didn’t)
8. What did; learn(对内容提问用what,借助did,learn变原形)
9. What did; do(对动作提问用what,原动作walked改为do,借助did变原形)
10. How did; feel(对感受提问用how,借助did,feel变原形,对应语法点3的特殊疑问句)
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