高中英语人教版 (新课标)必修1&2必修1Unit 1 Friendship课文ppt课件

这是一份高中英语人教版 (新课标)必修1&2必修1Unit 1 Friendship课文ppt课件，共32页。PPT课件主要包含了 Ex 等内容，欢迎下载使用。

Review the usage f –ing frm belw. Examine the sentences and discuss in what way the structures similar t each ther and in what way they are different.
Lking carefully at the grund, I made my way t the edge f the crater.
Having experienced quite a few earthquakes in Hawaii already, I didn’t take much ntice.
The –ing frm used as an adverbial.
Having + past participle (the perfect -ingfrm) t refer t an actin that tk place befre 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 bk has sme 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 lng talk with Sally, explaining why she didn’t want the children t play tgether. 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的逻辑主语，就是句子的主语my wife 。) The train having gne, we had t wait anther day.（the train逻辑主语 + having gne 即为独立主格结构）
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 tld many times, but he still culdn’t understand it. 正: He was tld many times, but he still culdn’t understand it. 或 Having been tld many times, he still culdn’t 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 tk ut his wallet. (=He pened the drawer and tk ut his wallet.)他打开抽屉，拿出钱包。
Cming int the rm, he put dwn his bag. (=He came int the rm and put dwn his bag.)他走进房间，放下提包。
Having brushed his teeth, Mr. Brwn came dwnstairs fr breakfast. 布朗先生刷过牙, 就下楼来吃早饭。 (此句如写成: Brushing his teeth, Mr. Brwn came dwnstairs fr 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 nt, never等否定词构成。
例如: Nt fearing the fire, the child tuched and gt a finger burnt. 小孩儿不知道 怕火，用手去摸，把手指烫了。 Nt knwing hw t find the subway, I asked a pliceman fr help. 我不知怎样找到地铁，就去找警察帮忙。
Rewrite the sentences using the present r the perfect –ing frm f the underlined verbs. The first tw have dne fr yu.
1.When they heard abut the vlcan they ran dwn t the village. Hearing abut the vlcan, they ran dwn t the village.
2. After the scientists had studied the infrmatin they predicted that the lava wuld flw thrugh the village. Having studied the infrmatin, the scientists predicted that the lava wuld flw thrugh the village.
3. Because I had experienced earthquakes befre, I wasn’t frightened.
Having experienced earthquakes befre, I wasn’t frightened.
4. When she wke up in the middle f the night she saw her rm was as light as day.
Waking up in the middle f the night she saw her rm was as light as day.
5. As sn as we had stpped the car, we put n ur prtective clthing.
Having stpped the car, we immediately put n ur prtective clthing.
6. Because l had spent all night watching the vlcan erupting, I was very tired the next day.
Having spent all night watching the vlcan erupting, I was very tired the next day.
7. As I came ut f my huse, I saw the vlcan erupting.
Cming ut f my huse, I saw the vlcan erupting.
8. As I had never seen a vlcan erupting befre, I was very excited.
Never having seen a vlcan erupting befre, I was very excited.