非谓语动词形式：主动语态被动语态不定式：to doTo have doneTo be doingTo have been doingTo be doneTo have been done动名词: DoingHaving doneHaving been doneBeing doneHaving been done分词：现在分词:being doneHaving doneHaving been doingBeing doneHaving been done过去分词: Done1. There is nothing to worry about.2. There is no time to hesitate.3. To save the earth, we must prevent the earth from being polluted.4. She left home, never to return again.5. To tell you the truth, I have never been to Beijing.6. None is allowed to smoke in the waiting room.7. After finishing the job, he went home.8. He was blamed for having done something wrong.9. A little child learning to walk often falls. 10. The men working here are all from the rural areas.11. Climbing to the top of the tower, we saw a magnificent view.12. He went out shutting the door behind him.13. When leaving the airport, they waved again and again to us.14. Being sick, I stayed at home.15. She caught cold sitting on the grass.16. Turning to the right, you will find a path leading to his cottage.17. Admitting what she has said, I still think that she hasnt tried her best.18. It rained for two weeks on end, completely ruining our holiday.19. Heated, the metals expand.20. Overcome with surprise, she was unable to utter a word. 21. Given more time, I will do it better. 22. Considered as a building material, wood is not very strong. 23. Badly involved in the accident, the car is still running. 24. We were surprised at his not passing the exam. 25. He prided himself on having never been beaten at chess. 26. The decision having been made, what is to be done now is how to carry it out. 27. I was overjoyed at the news of my hometown having made so much progress. 28. That the brain, once deprived of oxygen, dies has been proved.