Unit 2 Grammar and usage （ppt课件） -2022新牛津译林版《高中英语》必修第三册.pptx

1、Unit 2 Natural disasterGrammar and usageWhat kind of natural disasters have we learnt?EarthquakeTsunamiWhat kind of natural disasters have we learnt?TyphoonFire disasterWhat kind of natural disasters are connected with a strong storm?HurricaneTyphoona violent storm with very strong winds,especially

2、in the western Atlantic Ocean a typhoon is a very violent tropical storm.TornadoA tornado is a violent wind storm consisting of a tall column of air which spins around very fast and causes a lot of damage.Lets watch a short video.What should people do during a strong storm?What should people do duri

3、ng a strong storm?Stay insideClose doors and windowsListen to radio or watch TV to keep informed whats going onAAnna is interviewing her teacher,Mr Li,about his experiences during a hurricane.BeforeDuringAfterWhat are Mr Lis suggestion during a strong hurricane?Listen to local news Stay inside Calm

4、down Prepare enough food and waterAFind the sentences with to-infinitives and fill in the table below.To-infinitives as attributives To-infinitives as adverbials of resultTo-infinitives as attributives I was staying in Atlanta,and that was one of the cities to be hit.The roads were blocked,so there

5、was nothing for me to do but stay inside.I had enough food and water to last a whole week!used to describe a noun To-infinitives as adverbials of result That morning,I turned on the TV for some local news,only to hear that a hurricane was on its way.I looked out of the window,only to see huge trees

6、lying across the street and water everywhere!When the to-infintive is used as an attributive,it is often put (before/after)the noun or pronoun it modifies.When the to-infintive is used as an adverbial of result,it can refer to an (expected/unexpected)result.In this case,we often use only before the

7、to-infinitive.afterunexpected Working out the rules不定式作定语不定式作定语动词不定式与其所修饰的词之间往往有动宾关系，如果该不定式是由不及物动词构成，或者该不定式本身有宾语，其后应有必要的介词。The Browns have a comfortable house to live in.She had no money and no place to live(in).逻辑关系逻辑关系 主谓关系主谓关系(subject-verb)Clint was the second person to survive in the earthquake.

8、动宾关系动宾关系(verb-object)Wise men speak because they have something to say;fools because they have to say something.逻辑关系逻辑关系 同位语关系同位语关系(apposition)The need to love and to be loved is universal.被动形式被动形式The house to be built there will be a library.不定式作状语不定式作状语 作目的状语作目的状语(可位于句首或句尾可位于句首或句尾)I went there to

9、see my teacher.Page16-17:To protect yourself from a typhoon,follow the proper safety procedures.During a typhoon,you should do your best to keep your head.Pay attention to news updates to confirm whether the danger is gone.不定式作状语不定式作状语 作结果状语作结果状语(有时可表示意料之外的结果有时可表示意料之外的结果)The box was too heavy to mov

10、e.Page 20:That morning,I turned on the TV for some local news,only to hear that a hurricane was on its way.作原因状语He is sad to hear the bad news.B1Match the first half of the sentences below with the correct to-infinitives.1.I went to the annual earthquake workshop 2.The authorities told the local peo

11、ple 3.They arrived at the airport4.Before we returned home,the flood damage needed5.This was the last cityStep 1:find out the topic or key word from the first half of sentences.Step 2:find out the key words from the second half of sentences to match the first half sentences.a to be cleared of people

12、 before the volcano erupted.b to be repaired.c to stay inside when the typhoon arrived.d only to find the flight had been cancelled due to the snowstorm.e to learn some safety tips.Flood damagedLocal peopleairportworkshopStep 3:check logical relationship1.I went to the annual earthquake workshop to

13、learn some safety tips.2.The authorities told the local people to stay inside when the typhoon arrived.3.They arrived at the airport only to find the flight had been cancelled due to the snowstorm.4.Before we returned home,the flood damage needed to be repaired.5.This was the last city to be cleared

14、 of people before the volcano erupted.attributiveobjectobject complementadverbial of resultadverbial of purposeB2Below is Annas to-do list from yesterday afternoon.Complete the diary entry below using to-infinitives.to find books about hurricanesto attendto make PPT slides for my projectto find he w

15、as not in his officeadverbial of resultadverbial of purposeattributiveadverbial of purposeB3Jim is talking to his friend Julie about his experience after the earthquake.In pairs,complete the conversation below using to-infinitives.was actually the first to leaveto keep us warmwanted to return home as soon as possibleto find it completely destroyedadvised us to take an active part in the rebuildingReread the passages in the unit,and find out the sentences with to-infinitive and note the functions.