新人教版选修6 Unit5 The power of natureGrammar课件

1、高中英语 选修(模块）6-5.1,Period 4 grammar,Review the usage of ing form. Examine the sentences beloew and discuss in what way the structures similar to each other and in what way they are different,Looking carefully at the ground, I made my way to the edge of the crater.,The ing form used as an adverbial,Hav

2、ing experienced quite a few earthquakes in Hawaii already, I didnt take much notice.,Having + past participle (the perfect ing form) to refer to an action that took place before the time expressed by main verb.,小结-ing 形式的用法,1. ing 形式作状语,2. ing形式的完成式,例句 (Having been) written in haste, the book has so

3、me faults. 这本书因仓促写成，所以有些缺憾。,3. 使用-ing形式需注意的几个问题。,分词(短语)作状语时，其逻辑主语必须与 句子的主语一致。如果不一致，必须用独 立主格结构来表示，也就是在分词前面加 上它的逻辑主语。 My wife had a long talk with Sally, explaining why she didnt want the children to play together我妻子与莎莉 谈了很长时间，解释她为什么不想让孩子 们在一起玩。(现在分词explaining是句子 主语my wife做的动作，它们之间是主动,关系,即explaining的逻

4、辑主语，就是句子 的主语my wife 。) The train having gone,we had to wait another day.（the train逻辑主语 + having gone 既为独立主格结构）,分词短语做状语时，前面可以加上连词或 介词，但是分词短语和句子之间不能用并列连词(如but，and)，因为并列连词接的是两个并列成分，而分词短语只是全句的一个状语部分。分词和主句之间可用逗号。,例如: 误: Having been told many times，but he still couldnt understand it。 正: He was told many t

5、imes, but he still couldnt understand it。或 Having been told many times， he still couldnt understand it。,-ing的一般式和完成式现在分词都可以表示先后接连发生的动作。在可能引起误解的场合应该用完成式现在分词表示先发生的动作。,例如: Opening the drawer，he took out his wallet. (=He opened the drawer and took out his wallet.)他打开抽屉，拿出钱包。 Coming into the room，he put

6、down his bag. (=he came into the room and put down his bag.)他走进房间，放下提包。,Having brushed his teeth，Mr. Brown came downstairs for breakfast. 布朗先生刷过牙，就下楼来吃早饭。 (此句如写成:Brushing his teeth, Mr. Brown came downstairs for breakfast.可能指“边刷牙，边下楼。),分词的否定形式是在分词短语前面 加上 not, never等否定词构成。例如: Not fearing the fire, th

7、e childtouched and got a finger burnt. 小孩儿不知道怕 火，用手去摸，把手指烫了。 Not knowing how to find the subway, I asked a policeman for help. 我不知道怎 样找到地铁，就去找警察帮忙。,Ex: Rewrite the sentences using the presen or the perfect ing form of the underlined verbs. The first two have done for you .,1.When they heard about th

8、e volcano they ran down to the village. hearing about the volcano, they ran down to the village.,2. After the scientists had studied the information they predicted that the lava would flow through the village. having studied the information, the scientists predicted that the lava would flow through

9、the village.,3. Because I had experienced earthquakes before, I wasnt frightened.,Having experienced earthquakes before, I wasnt frightened.,4. When she woke up in the middle of the night she saw her room was as light as day.,waking up in the middle of the night, she saw her room was as light as day

10、.,5. As soon as we had stopped the car, we put on our protective clothing.,having stopped the car, we immediately put on our protective clothing.,6. Because l had spent all night watching the volcano erupting, I was very tired the next day.,having spent all night watching the volcano erupting, I was very tired the next day.,7. As I came out of my house, I saw the volcano erupting.,Coming out of my house, I saw the volcano erupting.,8. As I had never see