现在分词作状语-教学设计

Book4 Unit4 Grammar

The Present Participles as Adverbials现在分词作状语

教材分析：本课是人教版必修四第四单元语法课，现在分词充当句子成分是本课的语法重点，本单元阅读材料中出现了大量现在分词作状语的用法，高考也常有涉及。因此，本课围绕课时重点进行了四个方面的分析，一是现在分词的形式，二是现在分词所充当的状语类型，三是现在分词作状语和状语从句的转换，四是现在分词与主句主语的一致性。为了实现教学目标，我在教学过程中主要采取了观察归纳法、示范法、小组合作引导学生认识问题、分析问题、解决问题。为了巩固教学成果，我参考当前的常考题型如单句改错、短文填空设置了与教学内容紧密相关的作业题，希望能够达到巩固提升的效果。

学情分析：本班学生为高一年级实验班学生，学习基础总体较好，但因为还处于高中初级阶段，所以教学内容应当居中，教学过程中教师要及时点拨引导，做好学生的学习助手。

教学目标：通过本节课的学习，学生能够

知识目标：1.明确现在分词的各种形式；

2. 识别现在分词作状语的类别；

3.能把状语从句转换成相应的现在分词状语；

4.现在分词作状语的主语一致问题；

能力目标：学生能够正确使用现在分词作状语；

情感目标：1.树立英语学习的信心

2.增强小组的竞争与合作意识。

教学重点：1.帮助学生实现状语从句和现在分词作状语的互换

2.现在分词和不定式作状语时，其逻辑主语一般应与句子的主语保持一致。

（对策）：探究观察、小组讨论

教学难点：1.连词+分词形式（分词作状语的省略问题）

2. 现在分词的独立主格结构

（对策）：归纳法

教学用具：多媒体、黑板

教学过程：Lead-in→Presentation(Step2)→Consolidation(Step3)→Homework(Step4)

教学过程：

Step1:Lead-in （3mins）

Appreciate a short poem and find out the present participles used as adverbials.

Step2:Presentation (32mins)

Part1:Changes in tense and voice of present participles (5mins)

（现在分词在时态和语态变化）

A.Walking

B.walk

C.having walked

D.being walked

(2).____ by his father, my friend was unhappy.

A.Having punished

B.punished

C. Being punished

D.Punishing

(3).___ such heavy pollution already,it may be difficult to clean up the river.

A. Having suffered

B.Suffering

C.To suffer

D. Suffered

(4). _______ for three minutes, the girl felt nervous.

A.stare at

B.Being stared at

C.Having been stared at

D.To stare at

Part2 识别现在分词所充当的各种状语(8mins)

1.Review:判断V-ing在句中所做的成份

①. Coming late for school is a bad habit.

①.We should avoid talking loudly in a library.

①.They are exciting .

①. They are visitors coming from several countries.

①. Coming late, the girl missed the train.

2.Observe and think :现在分词可以做哪些状语？

Competition: Recognize the adverbials according to the information and tell what kind of adverbial it is.)

Example:Having been translated into 20 languages, the book is famous all over the world now.

(原因状语)

①.Being ill, he couldn’t come to school today.( )

①.Using your head, you will find a way. ( )

①.Having arrived at the factory,they immediately set to work. ( )

①Having a cold, the boy went to school as usual. ( )

①.She was so angry that she threw the toy on the ground, breaking it into pieces.

( )

①.The girl came in smiling. ( )

小结：现在分词可以充当原因条件、时间、让步、结果、伴随或方式状语。其中，_______、_______、______、_______常位于句首，_____、______常位于句尾，有时伴随状语或方式状语可谓语句中或句首。Part3 现在分词作状语，与状语从句的转换（13mins）

1.一句多译：观察并试着总结状语从句怎样转换成分词作状语。（从句分词）

When we are crossing the road, we often say: “Be careful!”

When we are crossing the road,we often say: “Be careful!”

When we are crossing the road,we often say: “Be careful!”

小结：当从句主语和主句主语一致，且从句谓语和主句主语是主动关系时，可以省略状语从句的_____、_____,当谓语中含有be或助动词do时，也应一起省略），再把谓语中的实义动词变成_______，其他不变。

2.请把下列状语从句转换成现在分词作状语。

Eg: After he heard a strong sound, he went out of the room for a look.

= Hearing a strange sound, he went out of ….

①.As the girl was seriously ill, she was taken to hospital immediately.

______________________________________________________

①.Being seriously ill, the girl was taken to ….

________________________________________________________

①.As she didn’t know any French, she couldn’t get any one to help her.

________________________________________________________

3.看谁反应快：判断下列现在分词作哪种状语，并把其可以替换的逻辑连词填入括号中。