v.­ing形式 一般式：___________ 动作与谓语动词同时发生 　　 完成式：___________ 动作在谓语动词之前发生 　　v.­ed形式 　　 表示完成和被动 学习活动二：根据感悟一用适当形式填空。

1. He is thought _____(act) foolishly. Now he has no one but himself to blame for losing the job.

2. The engine just won't start. Something seems ______(go) wrong with it.

3. His first book ________(publish) next month is based on a true story.

4. The sun began to rise in the sky, _______(bathe) the mountain in golden light.

5. I got to the office earlier that day, ________(catch) the 7:30 train from Paddington.

6. ______(show) around the Water Cube, we were then taken to see the Bird's Nest for 2008 Olympic Games.

7. The number of people ______(kill) in Mumbai Terror Attacks has reached 125.

问题一：非谓语动词作主语

1. 不定式作主语

（1）不定式作主语表示一次性的具体动作、将来的动作或一般情况。

作主语的不定式有时态和语态的变化，而且谓语动词的数通常为______。

（2）有时候为了保持句子平衡，也可以用_____作形式主语，而将作主语的动词不定式______。

（3）不定式的复合结构由"for/of sb to do"构成，"介词+sb(sth)"表明不定式动作的发出者，为不定式的逻辑主语。

学习活动一：用所给词的适当形式填空

1. _____ (stop) the work now seems already impossible.

2. It was foolish of you _____(give) up what you rightly owned.

3. 选词填空：for, of

1). It is so kind _____ you to do me such a good favour.

2). I don't think it right _____ you to say so absurd a requirement.

2. 动名词作主语

（1）.动名词作主语表示一般的、抽象的、习惯性的行为，动名词有时态和语态的变化，且谓语动词通常用_____形式。

Walking is good for health.

（2）动名词作主语时，可位于句首和句末。动名词位于句末时用____作形式主语。常见句型有：

It is + adj.(good, funny, nice, difficult, worthwhile, interesting等)+doing sth