新教材2021春高中英语人教版（2019）必修第三册课件：UNIT 1 SECTION Ⅲ DISCOVERING USEFUL STRUCTURES .ppt

1、Section Discovering Useful Structures一、动词-ing形式作定语【观察思考】People are running out of the burning house.(前置定语)人们正从着火的房子里跑出来。The boy standing there(=who is standing there)is a classmate of mine.(后置定语)站在那儿的那个男孩是我的同班同学。动词-ing形式作定语和表语The building being built over there is our library.(后置定语,强调“正在被建”)那里正在建造的大

2、楼是我们的图书馆。【探究总结】(1)单个的动词-ing形式作定语常放在被修饰的名词之前,作;动词-ing形式短语作定语则常放在被修饰的名词之后,作,相当于一个定语从句。表示、的动作。(2)动词-ing形式的被动式being done作定语时,表示一个、_的动作。(3)动词-ing形式的完成式一般不作定语。答案:(1)前置定语;后置定语;主动的;正在进行(2)被动的;正在进行【应用实践】(1)用所给词的适当形式填空。Women(look)after small children in this city usually get paid monthly.The children(practise

3、)playing the violin over there will give a performance next week.Make less noise.Theres a(sleep)child.You should adapt to the(change)situation.He built a(swim)pool in his garden last year.(2)句型转换。The man speaking to the teacher is Toms father.=The man _ _ speaking to the teacher is Toms father.No on

4、e is allowed to speak aloud in the reading room.=No one is allowed to speak aloud in the room _ _.答案:(1)lookingpractisingsleepingchanging swimming(2)who isfor reading二、动词-ing形式作表语【观察思考】Her job is teaching.=Teaching is her job.她的工作是教书。Her job is very interesting.她的工作是非常有趣的。The story is very moving.这个

5、故事很感人。【探究总结】(1)动词-ing形式作表语用于对主语的内容进行解释说明,可表示抽象或习惯性的动作,且主语和表语可以互换位置。(2)动词-ing形式作表语表示主语的性质、特征和状态,相当于形容词。动词-ing形式的前面可以有修饰性的副词,如very、rather、quite等。(3)作表语的动词-ing形式,许多是由能够表示人们某种感情或情绪的动词变化而来的。常见的有:astonishing、confusing、disappointing、boring、encouraging、inspiring、moving、tiring、interesting、surprising等,它们表示“”时

6、,常修饰物;但这类词的-ed形式,表示“”,常修饰人。令人的感到的【应用实践】(1)用所给词的适当形式填空。What I am tired of is(wait)here alone.This food smells(invite).Their job is(clean)the windows.The news was(disappoint).This film is very(move).(2)完成句子。My job is _(照顾)the children.His concern for his mother is _(相当感人).答案:(1)waitinginvitingcleaningdisappointingmoving(2)looking after quite moving