Unit 8 Lesson 2 Function & Pronunciation课件 (20页) 2024-2025学年英语仁爱科普版七年级下册

(共20张PPT)
Our Blue Planet
Function & Pronunciation
Unit 8
Learning aims
能正确拼读以下音素/ /, / l/, /ɑ /, / w /, / t /，/ d /, / ɡ /，/f/, /t/，能正确区分升降调
通过听说活动，了解水的来源、重要性，能谈论如何节约用水
Lead in
Why is water important to us
Watch and say
Activity 1
Know where water comes from, how important it is and talk about how to save water
Pair Work. Look at the pictures and talk about where water comes from.
sea
river
rain
ice
Listen to the conversation and answer the question.
Xiao Ya: Mom, where does water come from
Mom: There is water everywhere. It’s under the ground, in the ocean and in the sky.
Xiao Ya: But I can’t see any water in the sky.
Mom: It’s in the air. On sunny days, water goes up into the sky and forms clouds.
Xiao Ya: I see. As we all know, water is very important to us.
Mom: Yes. We need to drink water every day.
Xiao Ya: We also need to use a lot of water in our life.
Mom: That’s right. And the good thing is we have a lot of water on the earth.
Xiao Ya: Yes. Just because of this, we call the earth a blue planet.
Mom: But we can only use about 1% of the water on the earth. The rest is all sea water
or ice.
Xiao Ya: That is very little water. Let’s save every drop of water.
What are Xiao Ya and her mom talking about
They are talking about water.
Listen and read the conversation.
[ɡra nd] 地、地面
Xiao Ya: Mom, where does water come from
Mom: There is water everywhere. It’s under the ground, in the ocean and in the sky.
Xiao Ya: But I can’t see any water in the sky.
Mom: It’s in the air. On sunny days, water goes up into the sky and forms clouds.
Xiao Ya: I see. As we all know, water is very important to us.
Mom: Yes. We need to drink water every day.
Xiao Ya: We also need to use a lot of water in our life.
Mom: That’s right. And the good thing is we have a lot of water on the earth.
Xiao Ya: Yes. Just because of this, we call the earth a blue planet.
Mom: But we can only use about 1% of the water on the earth. The rest is all sea water or ice.
Xiao Ya: That is very little water. Let’s save every drop of water.
形成云
[f mz]
[kla dz]
在地下
众所周知
[dr p]
n.滴，水珠
v. 下降
Listen and read the conversation and mark T or F.
Water is under the ground, in the ocean and in the sky. ( )
Water can go up into the sky and form clouds. ( )
We need little water in our life. ( )
We can only use 10% of the water on the earth. ( )
T
T
F
F
a lot of
1%
Read the conversation and complete the summary.
Water is __________. It is under the ground, in the ________ and in the sky. On sunny days, water goes up into the sky and forms ________. We need to drink water every day and we also use a lot of water in our life. The earth is a blue planet. It is full of water. But we can only use about ________ of the water on it. We need to save every ________ of water.
everywhere
ocean
clouds
1%
drop
Pair work. Talk about the questions and make up a new conversation about water.
2. How important is water to us
1. Where is water from
3. Why do we need to save water
Sample
Student A: Hey, I was looking at these questions about water. Do you know where water comes from
Student B: Yeah, water comes from different sources like rivers, lakes, and underground. It also comes from rain, which is part of the water cycle. What do you think
Student A: I agree. I also read that some of our water comes from glaciers and snowmelt. But how important do you think water is to us
Student B: Water is super important! We need it to drink, cook, clean, and even for farming. Without water, we couldn’t survive. Do you think we use too much water
Student A: Definitely. I think we waste a lot of water, especially in cities. That’s why we need to save it. Do you know why saving water is so important
Student B: Yes, because clean water is limited, and if we waste it, there might not be enough for everyone in the future. Plus, saving water helps protect the environment.
Student A: That’s true. Maybe we should start by using less water at home and telling others to do the same.
Student B: Good idea! Let’s make a plan to save water and share it with our friends.
Activity 2
Sound / /, / l/, /ɑ /, / w /, / t /，/ d /, / ɡ /，/f/, /t/, & intonation correctly
Listen to the chant. Pay attention to the pronunciation of the colored letters.
Some children walk down from the bridge.
At the river they start to watch.
They always want to catch a fish.
So they sit down and make a wish.
Right then, they see one large enough.
Guess what! They catch it and laugh!
Listen and read the sounds and words aloud.
Letter(s) al ar wa ch/tch dge/g gu gh t
Sound / :/ / :l/ /ɑ:/ /w / /t / /d / /G/ /f/ /t/
Word walk call also always start dark want watch chess catch bridge judge large age guess guide laugh enough right fight
Listen and circle the word with a different sound in each group.
1. / :l/ always talk also 2. /ɑ / part around large
3. /t / chair school teach 4. /d / bridge orange guess
5. /G/ gun guest age 6. /f/ high laugh tough
Read the sentences and pay attention to the tone.
Mom, where does water come from
As we all know, water is very important to us.
Just because of this, we call the earth a blue planet.
How important is water to us
Let’s save every drop of water.
Read the sentences aloud and mark the last word with a rising tone ( ) or a falling tone ( ), and then listen and check.
Look at this river on the map.
Are there any people in the desert
Turn off the tap when you brush your teeth.
What about making a poster about saving water
Water comes from rivers, lakes and oceans.
1 . 陈述句（Statement）：通常使用降调（↘）。例子：
Look at this river on the map. ↘
Turn off the tap when you brush your teeth. ↘
Water comes from rivers, lakes and oceans. ↘
2 . 一般疑问句（Yes/No Question）：通常使用升调（↗）。例子：
Are there any people in the desert ↗
3 . 建议或提议（Suggestion/Proposal）：通常使用升调（↗）。例子：
What about making a poster about saving water ↗
总结：
陈述句和命令句通常以降调结束。
一般疑问句和建议句通常以升调结束。
升降调规则
Summary
◆重点词汇
◆重点句式
◆语音知识
everywhere, under the ground, form, cloud, ice, drop, full, as we all know
Where does water come from
There is water everywhere
As we all know, water is very important to us.
Let’s save every drop of water.
/ /, / l/, /ɑ /, / w /, / t /，/ d /, / ɡ /，/f/, /t/, & intonation
Exercise
I.短语翻译
1.在地下 ____________________
2.在海洋里 ____________________
3.在天空中 ____________________
4.形成云 ____________________
5.节约用水 ____________________
6.一滴（水）____________________
7.众所周知 ____________________
8.对某人重要____________________
under the ground
in the ocean
in the sky
form clouds
save water
a drop of water
as we all know
be important to sb.
II. Mark T for the same pronunciation and F for different pronunciations of the colored letters in each group.
( ) walk talk always
( ) dark part farm
( ) chess watch catch
( ) guess gun large
( ) enough tough laugh
F
T
F
T
T
Homework
1 Write down seven ways to save water in your life
2 Practice the phonetic symbols / /, / l/, /ɑ /, / w /, / t /，/ d /, / ɡ /，/f/, /t/ and intonation