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(共29张PPT)
Unit 4 Plant life
外研版 四年级下册
Get ready & Start up
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Warm up
Think and say
What's the video about
It's about a plant's life.
life /la f/
n. 一生，生活
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Look and learn
Do you like plants
What parts of the plants do you know
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We are seeds.
seed /si d/
n. 种子，籽
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We are roots.
root /ru t/
n. 根
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We are stems.
stem /stem/
n.（植物的）茎，梗，柄
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We are leaves.
leaf /li f/
n. 叶，叶子
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We are flowers.
flower / fla (r)/
n. 花，花朵
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Quick response.
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Listen and sing
earth / θ/
n. 泥土，土壤
thin /θ n/
adj. 细的
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Look and match
Look and match.
Then point and say.
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Read and answer
Who are they
Lingling
Sam
Daming
Amy
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They are digging.
What are they doing
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Because his seeds can't grow.
Why don't Sam's seeds grow
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Read again and match.
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Read and learn
dig /d ɡ/
v. 挖，掘
现在进行时：表示说话时正在进行或发生的动作
英语中常用的口语化疑问表达，意为 “为了什么？”“为什么？”
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sunflower
/ s nfla (r)/
n. 向日葵
表示某人拥有某物的句型：
主语+have/has got+物品.
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特殊疑问句，用于询问原因。aren't是 “are not” 的缩写形式，与后面的“growing” 构成现在进行时的否定形式。
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Listen and repeat
Evaluation
Intonation 语调
Emotional 感情丰富
Body language 肢体动作
Pronunciation 发音
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In focus
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Language points
询问某人“正在进行的动作”及回答的句型：
—What+be动词+主语+doing
—主语+be动词+V-ing+其他.
例：—What are you doing
—We're playing ping-pong.
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询问并回答对方的事物是否正在进行某动作的句型：
—Be动词+对方的事物+V-ing+其他
—Yes, it is./Yes, they are.
或No, it isn't./No, they aren't.
肯定回答
否定回答
例：—Is the owl flying
—No, it isn't.
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Look and write
They __________ (plant) tomato seeds.
—__________ he __________ (water) the plants
—Yes, he is.
—What __________ they __________ (do)
—They're picking grapes.
are planting
Is
watering
are
doing
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Ask and answer
Work in pairs. Ask and answer.
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What are they doing
They are watering the flowers.
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What are they doing
They are putting the seeds in the earth.
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Summary
Words
Sentences
life, seed, earth,
root, stem, thin,
leaf, dig,
sunflower
1. —What are you doing
—We're digging.
2. —Are your seeds growing
—Yes, they are.
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Homework
1.抄写本课时重点词汇3遍。
2.跟读背诵本课时对话部分。
3.用句型“—What is/are... doing —...is/are doing... ” 写几个句子，描述大家正在做什么事情。

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