Unit2动名词作主语和宾语样稿样稿.docx

必修四Unit2动名词(V-ing)作主语和宾语
动名词由动词-ing形式组成，于现在分词同型。作为动名词，它含有动词基础性质，能够有自己状语和宾语，也含有名词特征，在句中可作主语，表语，宾语。
总结归纳： 动名词作主语时，谓语动词用 。 动名词既可作动词宾语，又可作 宾语。
动名词形式
主动式 被动式
通常式：doing being done
完成式：having done having been done
Talking is easier than doing. He enjoys fishing.
Don’t be afraid of speaking English.
V-Ing做主语三种情况
掌握只能加ing作宾语动词;掌握加ing和不定式作宾语含义有区分动词 ;Ing复合结构
1．动名词作主语时，句子有三种形式：
①动名词直接置于句首主语位置上。
1)Playing tricks on others is something we should never do．
2)Learning new words is very important for me．
3) Talking is easier than doing.
②用形式主语it，把真正主语——动名词结构移置句尾。但这种句子形式有一定限制，作表语只能是一些形容词或少数名词，如useful，useless，good，fun；no use，worth等。
1) It’s worth making the effort．
2) It is useless trying to argue with Shylock．
3) Is it any good trying to explain?
4)It is pleasant working with you
③在there be结构中作主语，这种结构意思相当于“It is impossible to do… ” 如：
1) There is no hiding of evil but not to do it．
2) Here is no joking about such matter.
3) There was no knowing when he would leave.
动名词和to do 不定式作区分
-ing表示动作通常是一个泛指动作（抽象），不定式则通常表示具体动作。
I like reading，but now I like to see a film.
注意：There is no need to do sth 干、、、没必需，在此句式中to do 不可换为doing..
There is no need to tell her.
注意：-ing逻辑主语由形容词性物主代词和名词全部格组成。
My sister's being ill made we worried.
Your being right doesn't necessarily mean my being