九年级英语上册语法《非谓语动词》教学案

九年级英语上册语法《非谓语动词》教学案

非谓语动词

知识与技能

1.了解什么是非谓语动词

2.不定式的形式与用法

3.分词的基本形式与用法

4.动名词的形式与用法

情感态度与价值观

1.归纳所学的知识，提高对分词的认识

2.通过逻辑归纳，从而增加对英语的兴趣

教学步骤

一．动词不定式形式与用法

动词不定式的基本形式是“to+动词原形”，称为带to的不定式；有时to可以省略，称为不带to的不定式。这里的to只是符号，没有意义。例如

He wanted to sit down.(带to的不定式)

Let him sit down(不带to的不定式)

动词不定式的用法如下：

1.用作主语

不定式作主语通常位于句末。而在其原来的位置用it作形式主语。例如：

To learn a foreign language is not easy=It is not easy to learn a foreign language

2.作表语

To the doctor,the most important thing is to save lives.

3.作宾语

不定式在部分单宾及物动词后用作宾语，常用的这类动词有。

Agree,begin,choose,decide,expect,forget,hate,hope,learn,like,love.need.offer,prefer,pro mise,refuse,remember,start,try,want,wish,would like等。例如：

He began to read and write after lunch.

We find it impossible to cross the river.

(本句中的it是形式宾语，动词不定式短语to cross the river是真正的宾语)

4.作宾语补足语

(A)在大多数复合宾语及物动词后要用带to的不定式，这类及物动词常用的有allow,ask,beg,encourage,expect,find,get,hate,help,invite,order,wait

for,tell,want,warm,wish,would like等。例如：

①They ask him to sing a pop song at the party.

②We are waiting for the doctor to come.

(B)在表示五官感觉，致使等意义的动词后面，要用不带to的不定式，这类动词有feel,hear,see,watch,notice,have,let,make等。help后面可带可不带to。例如：

①They heard him sing a song in the classroom

②I want to have him look after the dog for me.

③The teachers helped the students(to)learn English well.

以上这类动词再变成被动语态时，原句中作宾补的不定式前要加上to.例如：

①The old machine was made to start working again by the yong man.

②He was seen to enter the room just now.

5.作定语

不定式可以象形容词一样用来修饰名词，但是它必须后置。例如：

①He is always the first to come to school.

②He is not a man to talk with.

6.作状语

①He came to borrow my dictionary.

②She is too young to go to school.

③I am pleased to meet you.

7.不定式使用的几个问题

(A)疑问词+to do可以作主语，表语，宾语等。例如：

①How to get there is a question.

②The problem is which to choose.

③He didn’t tell us when to leave.

(B)不定式的否定形式是在符号to的前面加上否定词not。例如：

①We have decided not to buy the house there.

②The head of the group told them not to stay too long.

二．分词的基本形式与用法

分词分为现在分词与过去分词两种，现在分词是由“动词原形+ing”构成，在句

子中有形容词和副词的作用；过去分词的构成有两种。规则变化和不规则变化。规则变化是由“动词原形+ed”构成，不规则的见《不规则动词表》。其用法如下：

1.用作定语

①a sleeping boy=a boy who is sleeping

②The room was full of people waiting for the train.

③We need more trained nurses

2.用作表语

分词用作表语时，已经完全形容词化了。可以被very,rather等副词修饰，而且可以有比较等级。例如：

1That was the most exciting film of the year.

2This cup is broken.

3The boy is very interested in computer games

3.用作宾语补足语

分词用作宾语补足语时，用于表示感觉，致使的动词。如：see,watch,hear,feel,smell,notice,find,have,get,leave,keep等。例如：

1He kept the machine running for ten hours

2We have never seen the mountain covered in snow.

4.用作状语

①Hearing a noise,they stopped talking.

②She sat there reading a book.

3Deeply moved,she couldn’t say a word.

三．动名词的用法

动名词或者名词短语具有名词的功能，在句中可用作多种名词性成分。

1.作主语

Swimming in the sea is his favourite sport.

2.作表语

My greatest pleasure is travelling.

3.作动词宾语

She enjoys going to the cinema.

4．作介词宾语

After finishing my work,I took a short rest.