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非谓语动词在初中英语中属于较高层次的语法项目,如何让学生在原有的基础上学得更透彻呢?
一、掌握各种非谓语动词的句法功能和用法
非谓语动词共有三种形式:动词不定式、动名词和分词。
1.动词不定式的句法功能和用法
1)作主语
To die for the people is a glorios death!
在很多情况下,我们常用代词“it”来替代不定式作主语,作语法上的形式主语,而把不定式移到谓语动词的后边去,以显得句子比较平稳。上述句即可改为:
It is a glorious death to die for the people.
当如果要说明动作是谁做的,可以在不定式前加一个“for”引导的短语。如:
It is very important for us to learn English well.
如果在句子中是以形容词(kind/good/nice/wise/clever/wrong/stupid等)作表语时,不定式前可加一个“of”引导的短语来说明不定式指的是谁的情况。如:
It is very kind of you to help me.
注意句型“It is+形容词+动词不定式”的用法。如:
It is necessary to make a plan for this course of study.
2)作表语
His wish is to become a teacher.
但某些不定式短语作表语时,在结构上是主动的,在意义上是被动的。如:
This room is to let.此房出租.
3)作宾语
want(想要)、wish(愿望)、like(喜欢)、decide(决定)、help(帮助)、pledge(保证)、begin(开始)、forget(忘记)、learn(学习)、ask(要求)等等及物动词常用动词不定式作宾语。动词不定式一般不作介词的宾语。如:
Do you like to watch football matches?
动词不定式也可以用作某些形容词的宾语,这些形容词通常只有ready(准备好、原意)、eager(热心)、anxious(担心)等;但为了学习上的方便,也可以包括able(能够)、sure(一定)、glad(高兴)、sorry(难过)、afraid(怕)、free(随意)、pleased(高兴)、determined(决心)、willing(愿意)等。如:
How do you do?I'm glad to meet you.
动词tell/advise/show/teach/learn/forget等常用一个连接代(副)词的不定式作宾语。如:
The teacher teaches us how to answer this question.
4)作定语
She has some questions to ask.
应注意的是不定式作定语时,同它所修饰的词往往有动宾关系,如果不定式后接不及物动词,后面则应用必要的介词。如:
He is a good comrade to work with.
5)作状语
He went to Beijing to study in 2003.(表示目的)
当动词不定式的状语时,可以放在句首,使其所表示的目的更加明显突出。
如:To be a good teacher one must use good teaching methods.
2.动名词的句法功能及用法
1)作主语
Learning without practice is no good.
动名词作主语同动词不定式类似,也可用替代词“it”来作形式主语,把动名词移到后边去。如上述句子可写成:
It is no good learning without practice.
2)作表语
Her job was looking after the pigs.
动名词作表语时,不可与进行时态相混淆。试比较:
She was washing clothes.(过去进行时)
Her job was washing clothes.(动名词作表语)
3)作宾语
a)作直接宾语,用在begin、start、stop、finish、like等动词后。如:
Please stop talking.
b)作介词的宾语。如:
My sister is fond of reading novels.
3.分词的句法功能及用法
1)作定语
The boy standing at the door is my classmate.
作定语用的分词如果是单个词,一般放在它所修饰的名词之前。如:
He likes to drink cold boiled water.
2)作表语
分词作表语同不定式、动名词作表语一样是表达主语的特征、状态和性质的。如:
The cups are broken.
3)作状语
分词在意义上用作状语,表示时间、原因、方式和伴随情况等。如:
Looking out of the window,I saw groups of children passing by she house.(表示时间)
He came running back to tell us the news.(表示方式)