Grammar:Look at the examples below, paying attention to the underlined parts. 1. Walking is good for your health.2.Such training was common in acting families at this time.3.His subtle acting made everything entertaining. 4.What is so interesting about them? 5.a walking stick 6. his charming characterWhat are they in common?Talk about the usage of -ing.一、一、-ing形式作定语形式作定语1. 单个动词的单个动词的-ing形式作定语位于被修形式作定语位于被修饰名词的饰名词的前面前面，既可以，既可以表示被修饰者表示被修饰者的作用或功能的作用或功能，也可以表示被修饰者也可以表示被修饰者的动作或状态的动作或状态。如：。如： building materials = materials for building 建筑材料建筑材料-ing形式作定语形式作定语, 宾语补足语和表语的用宾语补足语和表语的用法法drinking water = water for drinking 饮用水饮用水a walking stick = a stick for walking 手杖手杖a reading room = a room for reading 阅览室阅览室a writing desk = a desk for writing 写字台写字台Explain the following phrases in simple English.a sleeping baga sleeping boy a drinking cup a drinking horse A bag for sleepingA boy that is sleepingA cup fordrinkingA horse that is drinkinga dancing halla dancing girl a cooking pot a moving storyA hall for dancingA girl that is dancingA pot for cooking A story that is movinga washing machineA terrifying soundan operating table an inspiring leader A machine for washingA sound that is terrifyingA table for operatingA leader who is inspiring 2. -ing形式形式短语作定语时短语作定语时, 放在放在所修饰的名所修饰的名词之后词之后, 并且在意思上相当于一个定语从句。并且在意思上相当于一个定语从句。如：如：eg1.The man standing there is Peters father. = The man who is standing there is Peters father. 站在那儿的那个人是彼得的父亲。站在那儿的那个人是彼得的父亲。 eg2.They lived in a room facing the street. = They lived in a room that faces the street. 他们住在一间面朝街的房子。他们住在一间面朝街的房子。 3. -ing形式短语也可以用作非限制定语，形式短语也可以用作非限制定语，相当于一个非限制性定语从句，这时，相当于一个非限制性定语从句，这时，它与句子其他部分用逗号分开。如：它与句子其他部分用逗号分开。如： His brother, working as a teacher, lives in Beijing. = His brother, who is working as a teacher, lives in Beijing. 他那个当教师的哥哥住在北京。他那个当教师的哥哥住在北京。二、二、-ing形式作宾语补足语形式作宾语补足语 1. 动词动词-ing形式作宾语补足语常放在宾语形式作宾语补足语常放在宾语后面，后面，表示一个正在进行的主动性的表示一个正在进行的主动性的动作，强调一种状态动作，强调一种状态。如：。如： When we returned to the school, we found a stranger standing at the entrance. 当我们回到学校时当我们回到学校时, 发现一个陌生人站发现一个陌生人站在大门口。在大门口。 We found the snake eating the eggs. 我们发现蛇正在吃鸡蛋。我们发现蛇正在吃鸡蛋。 I found a bag lying on the ground. 我发现地板上放着一个包。我发现地板上放着一个包。 The boss kept the workers working the whole night. 那老板让工人整夜地工作。那老板让工人整夜地工作。2. 能用能用-ing形式作宾语补足语的几类动词形式作宾语补足语的几类动词: 1) 表示感觉表示感觉或或心理状态的动词，常见的有心理状态的动词，常见的有see, hear, feel, smell, find, notice, observe, look at, listen to等。如：等。如： We saw her singing in the classroom. I felt somebody patting me on the shoulder. Can you smell anything burning? As he spoke, he observed everybody looking at him curiously. Listen to the birds singing. I didnt notice him waiting. 2) 表示表示指使意义指使意义的动词，的动词，译为译为“使、让使、让” 常常见的有见的有have, set, keep, get, catch, leave等。等。如：如：I wont have you doing that. This set me thinking.Im sorry to have kept you waiting. I cant get the clock going again.You wont catch me doing that again. 3. see, hear, feel, watch等动词之后用等动词之后用-ing形式和动词不定式作宾语补足语的区别：形式和动词不定式作宾语补足语的区别： We passed by the classroom and saw the teacher making the experiment. 我们走过教室，看见老师在做实验。我们走过教室，看见老师在做实验。 前者表示动作前者表示动作正在进行正在进行，而后者表示，而后者表示（或强调）动作从开始到结束的（或强调）动作从开始到结束的全过程全过程。如。如:We sat an hour and watched the teacher make the experiment. 我们坐了一个小时，看老师做实验。我们坐了一个小时，看老师做实验。 如果宾语补足语是短暂性动词，如果宾语补足语是短暂性动词，动词不动词不定式短语表示一次动作，定式短语表示一次动作， 而而-ing形式则表形式则表示反复动作示反复动作。如：。如： We heard the door slam（砰）（砰）. We heard the door slamming. ( (反复动作反复动作) )( (一次动作一次动作) ) 三、三、-ing形式作表语形式作表语 -ing形式作表语时放在系动词之后，形式作表语时放在系动词之后，说明主语说明主语特征、性质或所处的状态；对主语内容的解释说特征、性质或所处的状态；对主语内容的解释说明明。常见系动词有常见系动词有be,become,get,look,seem,appear,sound,feel,keep等等如：如： Her hobby is painting. 她的业余爱好是画画。她的业余爱好是画画。 My job is looking after the children. 我的工作就是照顾这些孩子。我的工作就是照顾这些孩子。 It sounds interesting.astonish, depress, play, do, ride, amuse, bark, welcome Exercise:Choose the suitable words from the box below and fill in the blanks in the correct form. 1. I cant imagine Billy _ a motorbike. riding 2. Did you hear the dog downstairs _ for most of the night? 3. Frank is very good at telling funny jokes. He can be very _. 4. You cant stop me _ what I want. 5. He gave me a _ hug when he met me at the airport. barkingamusingdoingwelcoming 6. Jim has really learnt very fast. She has made _ progress. 7. Its been raining all day. This weather is _. 8. When I came out of the theatre, I noticed a group of children _ musical instruments across the street. astonishingdepressingplaying用括号内所给动词的适当形式用括号内所给动词的适当形式填空填空1.The room is empty except for a bookshelf_(stand) in one corner.2.When we saw the snow _(cover)the ground,we decided to spend the holiday at home.3.He was sorry for having kept the girl_(wait) for so long time.4.Its very cold and it is hard to get the car_(run).