Unit 1 The Changing WorldGrammar Focus 4a-4c同步导学案 2026-2027学年人教版九年级英语上册
Unit 1 The Changing World
Grammar Focus 4a-4c 同步导学案(学生版+教师版)
- 知识目标:熟记 used to do、一般过去时、现在完成时 三种时态的完整句型结构、标志词、用法区别,掌握单元高频动词变形。
- 能力目标:能准确辨析三种时态,熟练完成时态判断、动词填空、句型转换,能结合家乡变迁话题进行口语和书面输出。
- 素养目标:通过今昔对比句型感受乡村发展变化,树立家国情怀,提升英语语法应用与写作能力。
1. 含义:
表示过去常常做某事 / 过去存在某种状态,现在已经不再如此,只用于过去常态,不与现在时间连用。
2. 完整句型结构
✅ 肯定句:主语 + used to + 动词原形
✅ 否定句:主语 + didn’t use to + 动词原形
✅ 一般疑问句:Did + 主语 + use to + 动词原形?
✅ 特殊疑问句:特殊疑问词 + did + 主语 + use to + 动词原形?
✅ 存在句型:There used to be + 名词(过去曾经有……)
3. 例句
He used to work in big cities. 他过去在大城市工作。
There didn’t use to be high-tech greenhouses here. 这里过去没有高科技温室。
4. 易错点:
used to 后必须加动词原形;否定、疑问句式中还原为 use to。
1. 含义:
过去某个具体时间发生并结束的动作,与现在无关联。
- 常用标志词:
yesterday, last…, …ago, in the past, just now
3. 完整句型结构
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✅ 肯定句:主语 + 动词过去式
✅ 否定句:主语 + didn’t + 动词原形
✅ 一般疑问句:Did + 主语 + 动词原形?
✅ 特殊疑问句:特殊疑问词 + did + 主语 + 动词原形?
- 例句:
The village opened a new library last Friday. 这个村庄上周五新开了一座图书馆。
1. 含义:
动作发生在过去,持续到现在,或对现在造成影响,重点强调现在的结果。
- 常用标志词:
just, ever, never, yet, already, for+时间段, since+时间点
3. 完整句型结构
✅ 肯定句:主语 + have/has + 动词过去分词
✅ 否定句:主语 + have/has + not + 动词过去分词
✅ 一般疑问句:Have/Has + 主语 + 动词过去分词?
✅ 特殊疑问句:特殊疑问词 + have/has + 主语 + 动词过去分词?
- 例句:
Great changes have taken place in my hometown. 我的家乡发生了巨大的变化。
时态 | 核心用法 | 标志性词汇 | 动词形式 |
used to do | 过去常态,现在已改变(用于今昔对比) | in the past(无具体时间) | used to + 动词原形 |
一般过去时 | 过去具体时间完成,与现在无关 | ago / last / yesterday | 动词过去式 |
现在完成时 | 动作持续至今/对现在有影响 | ever / yet / just / for / since | have/has + 过去分词 |
写出下列高频动词的过去式、过去分词
1. be ________ / ________
2. open ________ / ________
3. go ________ / ________
4. see ________ / ________
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5. build ________ / ________
6. take ________ / ________
7. make ________ / ________
8. improve ________ / ________
9. plant ________ / ________
10. change ________ / ________
读出句子,划出动词,在括号内标注对应时态(used to do / 一般过去时 / 现在完成时)
1. He became a good friend of your grandfather about 20 years ago. (__________)
2. We used to have to travel far to see a doctor. (__________)
3. Many people used to work in big cities. (__________)
4. They haven’t seen each other for ages! (__________)
5. Our village has just built a new hospital. (__________)
6. More of them have come back to live and work here. (__________)
用括号内动词的正确形式补全对话
A: ______ you ______ (be) to the new library yet?
B: No, I ______ (not know) there was a new library. When did it ______ (open)?
A: It ______ (open) last Friday. I ______ (go) there with my grandpa on Saturday night.
B: ______ you ______ (like) it?
A: Of course! It’s the most high-tech library I ______ ever ______ (visit).
B: Oh, what ______ you ______ (see) there?
A: I also ______ (read) digital books on the computer. My grandpa ______ (listen) to audio books.
B: Cool! I ______ (bring) my little brother there tomorrow.
用动词适当形式填空,体会三种时态用法
In the past, it ______ (be) difficult to travel in Guizhou. In many places, there used to ______ (be) no bridges to cross mountains and rivers. This ______ (make) it hard for locals to sell products.
Now great changes ______ (take) place. The government ______ (build) lots of highways and railways. A journey that used to ______ (take) a day now takes only a few hours. The lives of local people ______ (improve) greatly. They are much happier than they once ______ (be).
1. I ______ (see) this new library last week.
2. He ______ never ______ (visit) a high-tech greenhouse before.
3. People ______ (use to) walk a long way to shop years ago.
4. My hometown ______ just ______ (build) a new railway station.
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