新概念英语第二册语法精粹及练习(十四)
新概念一直被视为英语学习的经典教材，为了让同学们能够更加全面完善的学习新概念英语第二册，新东方在线名师将帮助同学们一起总结新概念英语第二册语法讲解与相应联系，希望对同学们有帮助。新概念英语第二册语法精讲及练习
一.不定式
1.定义：具有名词、形容词及副词性质并具有时态、语态变化。
2.形式：(以do为例)
主动语态 被动语态
一般时 to do to be done
进行时 to be doing
完成时 to have done to have been done
完成进行时 to have been doing
3.用法：
(1)用作主语：
To speak good English is not easy.
or: It is not easy to speak good English.
(采用形式主语 it 以避免头重脚轻)
It took me an hour to do the work.
(2)用作宾语：
She decided to take the examination.
I hope to meet him soon.
(3)宾语补足语：
They expected us to help them.
Hewants his son to study hard.
金牌重点：
不定式作宾补，如谓语动词是感官动词，使役性动词(see, hear, notice, watch, make, have, let...)，则不定式符号“to”须省略，但在被动语态中不能省。
I heard them sing in the classroom.
I made her clean the room.
The girl is heard to sing an English song.
(4)用作表语：To teach is to learn.
His job is to sell cars.
(5)用作状语，表示目的，结果。
We come to school to study English.(目的)
= in order to
I hurried to the store, only to find it closed.(结果)
(6)定语：不定式短语作定语须位于名词之后。
He asked for a piece of paper to write it on.
= to write it on the piece of paper.
The poor man has no house to live in.
= to live in the house.
Have you anything to do?
= to do anything
(暂不提供全文)
新概念英语第二册课文对原有教学法进行调整，更利于学生加强交际能力。每课书相对独立，利于同学们自学。
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