2021学年Unit 3 The world of science教案

这是一份2021学年Unit 3 The world of science教案，共5页。

(Grammar & Vcabulary & Listening)
教学设计
In this perid, students will be guided t master the usage and rules f the present perfect passive tense. Tw cntextual exercises including pictures f reprting lss t the plice and intrductin t 3D printing technlgy will help use the grammar item better.
Students will als learn t build up vcabulary describing careers in science. In wrd learning, students can fllw the rules f wrd building and meanwhile discuss what career interests them mst. In the part f listening, understanding inventin stries frm listening will strengthen students’ listening ability.
Thrugh the cmprehensive training f skills in real cntext, Students can deepen the understanding f this unit tpic, imprve the ability t use integrated speech.
1. Guide the students t master the usage and rules f the present perfect passive.
2. Help the students accumulate English vcabulary describing careers in science.
3. Strengthen students’ listening ability t understanding inventin stries and enhance their ral expressin ability.
4. Deepen the understanding f this unit tpic, imprve the ability t use integrated speech thrugh the cmprehensive training f skills.
1. Help students t summarize the rules f the present perfect passive and crrectly use it in different real situatins.
2. Imprve the students’ listening ability t understanding inventin stries.
3. Enhance the students’ ral expressin ability by telling the stry behind an inventin.
Step 1 Grammar learning --Present perfect passive
Activity 1 Definitin and sentence patterns
1. Cmpare the fllwing pairs f sentences and identify the basic sentence patterns f the present perfect and the present perfect passive.
2. Review the definitin f the present perfect tense and master the active and passive structures f the present perfect tense
Ntes:
3. The tw structures abve can be transfrmed with the same meaning.
Step 2 Practice
Activity 2
1. Rewrite the underlined sentences in the passage using the present perfect passive.
① It has already affected many things in ur lives.
② Sme restaurants in Lndn have served 3D-printed hamburgers t custmers.
③ The mst significance success that peple have achieved t date is in medicine.
④ They have made human bdy parts, including a beating heart, with 3D printing technlgy.
⑤ Peple have given a new 3D-printed shell t a turtle injured in a frest fire.
Activity 3
Lk at the picture and describe what has happened t the plice.
In the mrning, When I went int my lab, I felt extremely surprised. What a mess it is nw! My lab __________ (break) int. The nly rbt at the dr __________ (push) dwn int pieces. The dr f the cupbard was pen. Sme chemical apparatuses such as test glasses and tubes __________ (knck) ver. In additin, sme papers n the desk are in disrder.
Step 3 Vcabulary
Activity 4
1. Have the students read the pictures and learn abut wrds describing careers in science.
2. Lead the students t learn abut the rules f wrd-building with the help f “Learning t learn”. Pay attentin t suffix such as -er/ -ist/ -ian.
Activity 5 and Activity 6
1. Fill in the blanks with the wrds in Activity 4.
2. Wrk in pairs. Talk abut sme careers in science which interests yu mst.
Step 4 Befre listening
1. Lead the students t read “Did Yu Knw?” s that they shw a great interest in inventin stry.
2. Give students sme minutes t read the pictures in preparatin f predicting the cntent f listening.
Step 5 While listening
Activity 7
1. Listen t the tape fr the first time and understand the basic infrmatin f the cnversatin t number the pictures in the crrect rder. .
2. Listen again and check the answer with the class.
Activity 8
1. Guide the students t further get mre detailed infrmatin f the listening material after finishing Activity 7.
2. Fcus n hw the speakers describe the stry behind an inventin and take ntes f key expressins t cmplete the exercise in Activity 8.
Step 6 Pst -listening
1. Wrk in pairs. Encurage the students t expand yur thinking and create yur wn situatins in which tw students have a cnversatin abut an inventin stry.
2. If time desn’t permits, the students prepare fr a stry f a famus inventr fr daily reprt next perid.
Step 6 Language appreciatin
1. 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!
[句式分析] “It is nt just humans wh are benefiting”本句为“强调句”, 其基本结构为“It’s + 被强调部分+ that+ ...”。(注意强调句中的连接词一般只用wh（指人）或that（可指物，也可指人）。若被强调的是状语，也只能用that，而不能用when或者where。而且连接词不能省略.)。 “injured in a frest fire” 为过去分词短语作“后置定语”，修饰“a turtle ”。
[尝试翻译] 受益的不只是人类——在巴西，人们给一只在森林火灾中受伤的海龟一个新的3d打印外壳!
2. His wrk n Chen’s Therem made an imprtant advance twards prving Gldbach’s Cnjecture, the greatest unslved prblem in number thery.
[句式分析] “make an imprtant advance twards...” 意为“取得重要进展”， “the greatest unslved prblem in number thery” 作“同位语”解释 “Gldbach’s Cnjecture”。 “unslved ”意为“未解决的”
[尝试翻译] 陈氏（陈景润）定理的研究在证明哥德巴赫猜想方面取得了重要进展，哥德巴赫猜想是数论中最重要的未解问题。
Step 7: Hmewrk
1. Review new wrds and phrases learn in this perid.
2. Cnslidate the grammar item--the present perfect passive tense learned in this perid.
a
I guess smene has asked yu abut the title f yur bk befre.
b
I guess yu have been asked abut the title f yur bk befre.
Present perfect active vice
Subject + have/has dne+...
Present perfect passive vice
Subject +have/has been dne+...