2026外研版新教材 英语八年级下册 Unit 5 Understanding ideas-Grammar 同步课件

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2026外研版新教材 英语八年级下册 Unit 5 Understanding ideas-Grammar 同步课件

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(共27张PPT)
Understanding ideas
—Grammar
Learning Objectives
Vocabulary
Share and Check
Grammar
Homework
Key Points
通过观察,总结宾语从句(that, if, whether)的结构与语义特征;
借助语篇填空的形式,正确使用宾语从句(that, if, whether);
通过小组合作,合理使用宾语从句描写一个自然界发现。
核心词汇:miss,Pluto,model,solar system,planet,mistake,raise questions,clear,meet,believe等。
核心语法:宾语从句(that, if, whether)
Pluto
/ plu t / n.
冥王星
Example:
Pluto is a dwarf planet in our solar system.
冥王星是太阳系中的一颗矮行星。
三级词汇
Pluto - The Dwarf Planet
model
/ m dl/
n. & v.模型;模特;模仿
Phrase:
model plane (模型飞机)
He made a model of the Eiffel Tower.
三级词汇
Solar System Model
solar system
Meaning:太阳系
“The Earth is part of the solar system.”
地球是太阳系的一部分。
planet
三级词汇
/ pl n t/
n. 行星
Jupiter is the largest planet in our solar system.
(木星是太阳系中最大的行星。)
Saturn - A typical planet
mistake
/m ste k/n. & v.错误;弄错
make a mistake(犯错误)
It's easy to make a mistake.
犯错误是很容易的。
三级词汇
raise questions
Meaning:提出问题
Example:Students should raise questions in class.
(学生应该在课堂上提出问题。)
clear
/kl (r)/
adj. & v.清晰的;清楚的;清除
clear up清理;放晴
The water in the lake is very clear.(湖里的水非常清澈。)
三级词汇
meet
/mi t/
v.
遇见;满足;开会
meet a friend(遇见朋友)
I will meet you at the school gate.
我会在校门口等你。
三级词汇
Review and lead in
尽可能用书中的句子回答:
· Did people in the past believe dinosaurs had feathers And why
· Do people now believe dinosaurs have features What makes them think so
Observe and learn——form
For hundreds of years, people believed that dinosaurs looked like huge lizards.
(b) They can tell us whether dinosaurs had feathers.
这种位于主句谓语动词后由that或if/whether引导的作宾语的句子,称为“宾语从句”。
Observe and learn——meaning
Find more sentences like these:
① ... scientists now know that this idea is wrong.
② They also help us understand that life on earth has always changed.
③ But the find proves that it did 35 million years ago.
④ In the future, amber may also help us discover if other species have changed over time.
⑤ They can tell us whether dinosaurs had feathers.
表示肯定或陈述内容时用that引导宾语从句,that无具体含义,只做连接使用
表示“是否”这种不确定的概念时,用if或whether引导宾语从句。
Observe and learn——meaning
Match
a) “Is there life in outer space ”
b) “Is Mr. Brown interested in insects or birds.”
c) “I want to be a scientist
and study plants.”
A) John told his parents.
B) Scientists aren’t sure.
C) Emily wants to know.
that
whether
whether
Scientists aren’t sure if/whether there is life in outer space.
John told his parents that he wanted to be a scientist and study plants.
Emily wants to know if/whether Mr. Brown is interested in insects or bird.
连接词
陈述语序
· What are we going to read
· Who is raising a question
Who is giving a reply
· What might this passage might be about
第一空:Is the writer sure about the mistake about the eight planets
第二空:Did people in the past believe that there were nine planets
第六空:Is the Prof. Jones certain that Daniel will ask for more help
Most of us have been to museums. Have you ever wondered whether the things shown in museums are completely right or not
Write and share
1. 收集素材,头脑风暴
2. 提供语言支架
Write and share
3. 短文示例
What the discovery is
Who made the discovery
What’s amazing about it
What you can learn from it
(1)“发现”的表达
made an amazing discovery that, research that…
(2)宾语从句的运用
Wonder if…, discovered that…, research shows that…
(3)句间衔接
By doing, just like, for example…
4. 分享与互评
① 介绍了该发现的基本信息,如:名称、相关人物等。
② 描述了该发现的独特性或重要意义。
③ 尽可能多地使用了本板块的核心词汇和学生用书Useful expressions中的表达。
Must do:
修改、润色并最终完成课堂的文段。
Choose to do:
向 “自然之我见——我与科学家的零距离接触”栏目组投稿:
1. 礼貌提出一些你对自然界好奇的问题(使用 whether / if 引导的宾语从句);
2. 表达一些你的对自然界的观点或猜想(使用 that 引导的宾语从句);
3. 两项任务加起来共3-5句话即可。
Thank you!

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