Unit 4 Discovering Useful Structures (ppt课件) -2022新人教版(2019)《高中英语》必修第三册.pptx

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1、认识和熟悉不定式作状语的三种类型。认识和熟悉不定式作状语的三种类型。能够在认识不定式作状语的类型基础上,正确翻译句子。能够在认识不定式作状语的类型基础上,正确翻译句子。能够在利用不定式作状语完成单句写作。能够在利用不定式作状语完成单句写作。The cat stretched out its claws to catch the fish in the water.猫伸出它的爪子去抓水里的鱼。猫伸出它的爪子去抓水里的鱼。导导The teacher was angry to see him late again.看到他又迟到了,老师很生气看到他又迟到了,老师很生气导导He lifted a roc

2、k only to drop it on his own feet.他搬起石头,砸了自己的脚。他搬起石头,砸了自己的脚。导导1.You must be intelligent enough to get a related college degree.2.Scientists work hard to find answer.3.We were surprised to find that he had left.结果状语结果状语目的状语目的状语原因状语原因状语4.He got to the station only to find the train had gone.5.As we al

3、l know,an astronaut needs to be healthy and calm in order to work in space.结果状语结果状语目的状语目的状语思思+议议1.“主语主语+be+adj.+to do sth.”结构中,不定式常作结构中,不定式常作原因状语,此类形容词有原因状语,此类形容词有happy,sorry,glad,excited,disappointed,shocked,satisfied,astonished等。如:等。如:They were glad to see their son taken good care of in the kinde

4、rgarten.他们很高兴看到儿子在幼儿园受到很好的照顾。他们很高兴看到儿子在幼儿园受到很好的照顾。他们很高兴看到儿子在幼儿园受到很好的照顾。他们很高兴看到儿子在幼儿园受到很好的照顾。评评发现他已经离开,我们感到很惊讶。发现他已经离开,我们感到很惊讶。We were surprised to find that he had left.“主语主语+be+adj.+to do sth.”某人某人因因做某事而感到做某事而感到老师看到她取得进步感到很高兴老师看到她取得进步感到很高兴。The teacher is glad to see her progress.展展2.不定式还常用在不定式还常用在t

5、oo.to结构、结构、enough to do及及only to do等后面作状语,表示结果。如:等后面作状语,表示结果。如:The box is too small to hold all these thingsI walked all the way from home to the library,only to find it closed.评评The boy is old enough to go to school.这帽子太大了,没法戴。这帽子太大了,没法戴。The hat is too large to wear.他走得太慢,无法准时参见会议。他走得太慢,无法准时参见会议。He

6、 walked too slowly to attend the conference on time.attend the conference 参加会议参加会议 on time 准时准时展展我匆忙返回公园,不料发现那个人已经离开。我匆忙返回公园,不料发现那个人已经离开。I hurried to return to the park,only to find(that)the man had left.hurry to do sth 匆忙做某事匆忙做某事return to sp.返回某地返回某地leave left left 离开离开展展3.不定式作目的状语既可放在句首也可放在句不定式作目的

7、状语既可放在句首也可放在句中中,不定式前可加不定式前可加 in order或或 so as。如:。如:He had to earn enough money to support the family.In order to master English,you must spend much effort on it.评评 Chinese researchers hope to use the instruments on board _(find)and study areas of the South Pole-Aitken basin(南极-艾特肯盆地).(2020新课标全国新课标全国

8、I)to find检检4.作评论性状语作评论性状语。有些不定式修饰整个句子,表。有些不定式修饰整个句子,表明说话者的观点和态度。明说话者的观点和态度。to tell the truth/to be honest/to be frank 说实话说实话to make matters worse 更糟糕的是更糟糕的是如如 To be honest,I dont like her.评评句法功能句法功能考点考点状语状语目的:目的:to do=so as to do=in order to do;结果:结果:tooto/enoughto/only to do原因:原因:adj.(glad/sorry/ha

9、ppy/nice/disappointed/upset/content)+to do 独立状语独立状语 to tell the truth/to be honest/to be frank/to make matters worse检检 1.I was surprised _(watch)him eat so quickly.2._(realise)our wishes,we must try our best to work well.3.He is _honest a man_a lie.to watchTo realisetooto tellRewrite the sentences u

10、sing infinitives or“in order to/so as to+do”.Change the italicized parts accordingly.In space,astronauts collect all dirty water so that it can be recycled for later use.In space,astronauts collect all dirty water so as to recycle it for later use.During a spacewalk,astronauts have to move slowly so that they can keep their bodies under control.During a spacewalk,astronauts have to move slowly to/in order to/so as to keep their bodies under control.

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