外研版 (2019)必修 第三册Unit 3 The world of science学案

这是一份外研版 (2019)必修 第三册Unit 3 The world of science学案，共3页。
课
题
Unit 3 The wrld f science Using language
课
型
新授课
课
时
第三课时
学
习
目
标
1. T master basic knwledge f this lessn and use them freely.
2. Help students master hw t use present perfect passive crrectly.
3. T sharpen students’ listening abilities by practising with the help f teacher.
重
点
难
点
1.Help students learn t talk abut their favrite careers.
2. Teach students t learn t describe stries behind an inventin.
学
法
指
导
1.课前30分钟自主学习，完成预习学案。
找出自己的疑惑和需要讨论的问题，用红笔做好标记。
2.课上25分钟高效讨论展示答案
3.课上10-15分钟答疑解惑。
4.课后20分钟巩固学习
课堂探究
Using language present perfect passive
Step 1
1 Lk at the sentences frm the reading passage and answer the questins.
(1) What has happened t “yu” in sentence (a)?


(2) Wh has used new inventins t make replacement hearts and bne parts in sentence (b)?


Cmpare them with the fllwing sentences and answer the questins.
(3) What is the difference between the tw grups f sentences?


(4) Why des the authr chse t use the passive frm instead f the active frm in the reading passage?


Nw lk fr mre sentences with these structures in the reading passage.



2.Rewrite the underlined parts using the present perfect passive.
Within the next 80 years, ur lives may be changed beynd recgnitin by 3D printing. It has already affected many things in ur lives, right dwn t the fd we eat. Fr instance, sme restaurants in Lndn have served 3D-printed hamburgers t custmers. But perhaps the mst significant success that peple have achieved t date is in medicine. They have made human bdy parts, including a beating heart, with 3D printing technlgy. And it is nt just humans wh are benefiting- in Brazil, peple have given a new 3D-printed shell t a turtle injured in a frest fire.







3. Imagine yu are Dr Mre. Lk at the pictures and tell the plice abut the damage and lss t yur lab. Use the present perfect passive where apprpriate.
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Step 2
1. Teach students hw t use present perfect passive crrectly.
2. Take ntes
(1)现在完成时被动语态定义:
1)

2)

Hmewrk
1. Sum up what we learned in class and take ntes.
2.Preview the next perid.