英语语法详解--ING分词（一）
内 容 提 要-ING分词也是动词的非限定性形式，由动词原形＋-ING构成，在句中可以直接作主语，也可用形式主语it来代替，而把-ING分词放到后边；可以作表语；作宾语时对动词有一定的要求，有的动词只能跟接-ING分词，有的动词则既可以跟不定式也可以跟-ING分词，而且-ING分词还可作介词的宾语；在作宾语补足语时对动词也有一定的要求；作状语时，-ING分词要与其逻辑主语呼应，否则就要用独立结构；-ING分词作定语时相当于一个定语从句。跟动词不定式一样，-ING分词也有它的完成时态、被动语态和否定形式；最后我们还要了解-ING分词的逻辑主语问题。
第一节 -ING分词的形式
-ING分词是指由动词原形＋-ING构成的、具有完成时态和被动语态的一种非谓语动词形式，具体形式如下
主动形式 被动形式
一般时 doing being done
完成时 having done having been done
就其语法功能而言，它可以作主语、表语、宾语、宾语补语、状语和定语。
第二节 -ING分词的用法
一、 作主语
1. 一般形式
1) the matriculation for postgraduate is probably the turning point of my life.
［A］ Taking the part of ［B］ Taking part in ［C］ To take the part of ［D］ To take the notice in
2) a teacher is being present at the creation, when the clay begins to breathe.
［A］ As［B］ To be［C］ Is［D］ Being
3) by transforming the blame to others is often called scapegoating.
［A］Eliminate problems［B］The eliminated problems［C］Eliminating problems[D］Problems are eliminated
2. 有时可以用it做形式主语
It's waste of time arguing with the gossip about it.
It's interesting having traveled to Beidaihe this year.［说明：从这句中我们可以看出，这种结构通常适用于名词和形容词。但不适用于像possible, important, essential, necessary等表示性质的形容词，这些词后面一般要跟动词不定式。我们不能说 It's quite necessary taking part in the negociation.应改作It's quite necessary to take part in the negociation.］
It's glorious getting involved in working out the plan.
4) It is ［A］ possible determining that ［B］ French explorers reached the jucture of ［C］ the Kansas and Missouri rivers ［D］ in the seventeenth century.