
【教學(xué)目標(biāo)】
1. Learn the structure, functins and features f infinitives.
2. Learn t summarize sme rules abut infinitives t shw purpse and mdify.
3. Learn t use infinitives in ral and writing English.
【教學(xué)重難點(diǎn)】
1. Learn t summarize sme rules abut infinitives t shw purpse and mdify.
2. Learn t use infinitives in ral and writing English.
【教學(xué)過程】
Step 1 Lead in—Pair wrk
Lk at the fllwing sentences and fcus n the italicized infinitives. In pairs, discuss their functins.
1. I trained fr a lng time t fly airplanes as a fighter pilt.(作目的狀語)
2. As we all knw, an astrnaut needs t be healthy and calm in rder t wrk in space.(作目的狀語)
3. First f all, yu must be intelligent enugh t get a related cllege degree.(作目的狀語)
4. Sme scientist were determined t help humans realize their dream t explre space.(作定語)
5. On 12 April 1961, Yuri Gagarin became the first persn in the wrld t g int space.(作定語)
Summary:
1.不定式的結(jié)構(gòu):t+d原形。
2.分析上面的句子,我們知道在描述太空探索時(shí),動(dòng)詞不定式不僅可以用來表目的,還可以用來作定語,表修飾。
Step 2 Functins f infinitives as attribute
Rewrite the sentences by using infinitives as attribute.
1. In 2003, Yuri Malenchenk became the first persn wh gt married in space.
In 2003, Yuri Malenchenk became the first persn ______________ in space.
2. Mankind has always been curius abut the universe and many peple have dreamed that ne day they wuld fly int space.
Mankind has always been curius abut the universe and many peple have dream ______________ space.
3. But Janis Adkins has the ability and desire that he can d sme useful wrk fr the disabled.
But Janis Adkins has the ability and desire ______________ fr the disabled.
4. I usually have a lt f meetings which I have t attend next week.
I usually have a lt f meetings______________.
5. We need smene wh can g and ask fr a dctr.
We need smene _____________________.
6. Andersn gave her his suggestin that she shuld insist n her task.
Andersn gave her his suggestin _____________________.
Answers: 1. t get married
2. t fly int
3. t d sme useful wrk
4. t attend
5. t g and ask fr a dctr
6. t insist n her task
Summary:
動(dòng)詞不定式用作定語,放在被修飾的名詞后面。
1.動(dòng)詞不定式作定語常放在名詞或不定代詞后面作后置定語,表示尚未發(fā)生的動(dòng)作。
We have much hmewrk t d tnight.
2.名詞前有first,last,next,nly等詞以及最高級(jí)修飾時(shí),其后要用動(dòng)詞不定式。
She was the first wman t win the gld medal in the Olympic Games.
3.抽象名詞attempt,ability,chance,desire,determinatin,decisin,plan,way或不定代詞smething,nthing等后面常用不定式作后置定語。
Janis Adkins has the ability and desire t d useful wrk.
4.當(dāng)名詞與定語之間存在動(dòng)賓關(guān)系時(shí)。
She is a nice persn t wrk with.
5.當(dāng)名詞與定語之間存在主謂關(guān)系時(shí)。
We must find a persn t d the jb.
6.當(dāng)名詞與定語有同位關(guān)系時(shí)。
We gt the rder t leave the city.
Step 3 Practice
(1) The airprt ______________ (cmplete) next year will help prmte turism in this area.
(2) D yu have anything _____ (d) tnight?
(3) The best way __________ (imprve) yur English is t jin an English club.
(4) Miss Liu is a very nice persn__________ (wrk) with.
(5) China is the third cuntry in the wrld__________ (send) men int space.
(6) Mary had great determinatin _____________ (achieve) her gal.
(7) The German girl has the ability ___________ (learn) Chinese well.
(8) I have smething imprtant __________ (tell) yu.
Answers: (1) t cmplete
(2) t d
(3) t imprve
(4) t wrk
(5) t send
(6) t achieve
(7) t learn
(8) t tell
Step 4 Functins f infinitives as purpse adverbial
Rewrite the sentences by using infinitives as purpse adverbial.
1. In space, astrnauts cllect all dirty water s that it can be recycled fr later use.
In space, astrnauts cllect all dirty water ________________ it fr later use.
2. Astrnauts’ bnes and muscles can get very weak in space due t the lack f gravity, s they need t exercise every day, which will help them stay healthy.
Astrnauts’ bnes and muscles can get very weak in space due t the lack f gravity, s they need t exercise every day_____________________.
3. Astrnauts have t use tape t stick everything dwn while wrking in space because everything wuld flat ff therwise.
Astrnauts have t use tape t stick everything dwn while wrking in space ________________.
4. During a spacewalk, astrnauts have t mve slwly s that they can keep their bdies under cntrl.
During a spacewalk, astrnauts have t mve slwly_____________________________.
Answers:
1. s as t/in rder t/t recycle
2. s as t/in rder t/t keep healthy
3. s as nt t/in rder nt t/nt t flat ff
4. s as t/in rder t/t keep their bdies under cntrl
Summary: 不定式作目的狀語,常譯作“以便……,目的是……”。主要用來修飾動(dòng)詞和形容詞,也可用來修飾副詞。在句中,不定式可作目的狀語、原因狀語、結(jié)果狀語、條件狀語等,可表示目的、原因及結(jié)果等。
1.目的狀語,置于句首或句末,置于句首時(shí)常表示強(qiáng)調(diào),為加強(qiáng)語氣。
A grup f yung peple gt tgether t discuss this questin.
(1)置于句首時(shí)只用t d / in rder t d。如用于表示否定,用in rder nt t d或s as nt t d形式。
I walked quietly s as nt t disturb the baby.
(2)不定式作目的狀語可轉(zhuǎn)換為s that/ in rder that或s…that…引導(dǎo)的目的狀語從句。
He wrked very hard t pass the exam.
→He wrked s hard that he culd pass the exam.
→He wrked hard s that/in rder that he culd pass the exam
2.原因狀語,多見于sb. + be + adj. + t d…結(jié)構(gòu)句中。
I was very sad t hear the news.
3.結(jié)果狀語,多見于t…t…;enugh t…;nly t d (表示意料之外的結(jié)果的發(fā)生);s/such…as t…(意為“如此……以至于……”)結(jié)構(gòu)句中。
He is ld enugh t g t schl.
I’m t tired t d well.
He rushed back, nly t find the bk missing.
Step 4 Practice
(1) ___________ (wrk ut) the difficult maths prblem, I have cnsulted Prfessr Russell several times.
________ (learn) mre abut Chinese culture, Jack has decided t take Chinese flk music as an elective curse.
He hurried t the statin nly ______ (find) the train had left.
We travel n Day 2 t nrthern France ______ (visit) the Wrld WarⅠbattlefields.
When the grillas and I frightened each ther, I was just glad ______ (find) them alive.
Jin us _______ (taste) a variety f fresh lcal fd and drinks.
Answers: (1) T wrk ut
(2) T learn
(3) t find
(4) t visit
(5) t find
(6) t taste
Step 5 Mre abut infinitive as purpse adverbial
現(xiàn)在分詞與不定式作結(jié)果狀語的區(qū)別
(1)動(dòng)詞不定式作結(jié)果狀語強(qiáng)調(diào)的是一種意想不到的結(jié)果。
Anxiusly, she tk the dress ut f the package and tried it n, nly t find it didn’t fit.
(2)現(xiàn)在分詞作結(jié)果狀語強(qiáng)調(diào)的是一種順承的,必然造成的結(jié)果。
His father passed away, leaving him a little mney.
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