非谓语动词的解题原则原则一、两个句子必须要用连词连接，如果没有连词连接，则需要用非谓语动词例1. _________ many times, but he stillcouldn’t understand it.A. Having been toldB. Having toldC. He had been toldD. Though he had been told例2._________ many times, he still couldn’t understand it.A. Having been toldB. Having toldC. He had been toldD. Though he had told解析：例1中有连词but连接，表明前后都是句子，所以答案为C。
例2中后面是一个句子，而且没有连词，所以前面不是句子，应该用非谓语动词，根据句意此处为被动，所以答案为A。
原则二、不及物动词无-ed形式非谓语动词，及物动词有宾语时用-ing形式，无宾语时用-ed形式例3. ____________ in the mountains for a week, the two students were finally saved by the local police.A. Having lostB. LostC. Being lostD. Losing解析：lose为及物动词，现在后面没有宾语，所以用-ed形式，答案为B。
例4. __________, I really believe that I’d prefer not to make any change now.A. Considered all the possibilitiesB. Taking all the possibilities into considerationC. Taken all the possibilities into considerationD. Giving all the possibilities解析：把。
考虑进来结构为take sth into consideration，现在take后面有宾语all the possibilities，所以用-ing形式，答案为B。
原则三、being done 表示“正在被”，一般不作状语，只作定语。
非谓语动词的完成时形式to have done或having done强调该动作发生在句子谓语动词之前例5. __ to reach them on the phone, we sent an email instead.A. FailB. FailedC. To failD. Having failed解析：根据句意“我们没有打通电话，就给他们发了个邮件”，没有打通电话应该发生在发邮件之前，所以用having done，答案为D。
例6. Tim Bemers-Lee is generally considered _____ the World Wide Web, on which all the information is shared by all.A. to have foundedB. having foundedC. foundingD. to found解析：根据句意，Tim Bemers-Lee创立万维网应该是过去的事情，而且be considered后面应该用动词不定式，所以应该用to have done，答案为A。
原则四、非谓语动词作定语时，表示将来用-to do，表正在进行用-ing，表示已经完成用-ed例7. The play_____ next month aims mainly to reflect the local culture.A.producedB.being producedC.to be producedD.having been produced解析：根据本题中的时间状语next month，可知the play 将要于下月被创作出来，表将来应该用to do，所以答案为C。
例8.The trees _____ in the storm have been moved off the road.A. being blown downB. blown downC. blowing downD. to blow down解析：根据句意“被暴风雨刮倒的树已经从路上移走了”，树被刮倒是过去已经完成的动作，表已经完成用-ed 形式，所以答案为B。
原则五、介词后跟-ing形式，可以在-ing前加逻辑主语例9. The discovery of new evidence led to______________.A. the thief having been caughtB. the thief to be caughtC. catch the thiefD. the thief being caught解析：本题led to中的to是介词，后面应该用-ing形式，the thief作-ing的逻辑主语，所以答案为D。
例10. At the beginning of class, the noise of desks ____ could be heard outside the classroom.A. opened and closedB. to be opened and closedC. being opened and closedD. to open and close解析：本题the noise of中的of是介词，后面应该用-ing形式，desks作-ing的逻辑主语，所以答案为C。
原则六、-ing形式或to do可作主语或宾语，-ed形式则不可以例11. ___________ in a heavy traffic jam is quite an unpleasant experience.A. CaughtB. Having caughtC. Being caughtD. To catch解析：本题中is为系动词，前面应该作主语，用-ing 形式，所以答案为C。
例12 ___twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.A. ExaminingB. ExaminedC. Being examinedD. Having been examined解析：本题中is为系动词，前面应该作主语，用-ing形式，所以答案为C。
原则七、be+-ed+介词结构常可把be去掉保留-ed+介词做状语例13Michael’s new house is like a huge palace, ______with his old one.A. comparingB. comparesC. to compareD. compared解析：“和。
相比较”结构为be compared with，现在做句子的状语，所以只保留非谓语动词，把动词be去掉，答案为D。
例14 _______ with a difficult situation, Arnold decided to ask his boss for advice.A. To faceB. Having facedC. FacedD. Facing解析：“面对”结构为be faced with, 现在做句子的状语，所以只保留非谓语动词，把动词be去掉，答案为C。
原则八、非谓语动词作状语，其逻辑主语必须和句子主语保持一致，和句子主语构成主谓关系时用-ing形式，构成动宾关系是用-ed形式。
其逻辑主语和句子主语不一致时，要在非谓语动词前加逻辑主语，构成独立主格结构例15. ____ twice, the postman refused to deliver our letters unless we changed our dog.A. Being bittenB. BittenC. Having bittenD. To be bitten解析：本题考查非谓语动词作状语，其逻辑主语应和句子主语the postman一致，the postman应该是被咬，所以答案为B。
例16._______ in the fields on a March afternoon, he could feel the warmth of spring.A. To walk.B. WalkingC. WalkedD. Having walked解析：本题考查非谓语动词作状语，其逻辑主语应和句子主语he一致, he 和walk应该是主动关系，所以答案为B。
例17. While watching television, __________.A. the doorbell rangB. the doorbell ringsC. we heard the doorbell ringD. we heard the doorbell rings解析：根据“非谓语动词作状语，其逻辑主语必须和句子主语保持一致”的原则，watching的逻辑主语应和后面句子主语一致，所以句子主语应为“we”，答案为C。
例18. The children went home from the grammarschool, their lessons ____ for the day.A. finishingB. finishedC. had finishedD. were finished解析：本题没有连词，所以后面应用非谓语动词，the lessons是非谓语动词的逻辑主语，和非谓语动词构成独立主格结构。
根据句意应是“被完成”，所以答案为B。
原则九、不定式做状语一般有两种：目的状语和出乎意料的结果状语(表示顺其自然的结果用-ing形式)。
另外，某些形容词(表喜、怒、哀、乐)做表语后跟不定式可以表示原因例19._____, you need to give all you have and try your best.奇速英语公众微信号qisuenA Being a winnerB To be a winnerC Be a winnerD Having been a winner解析：根据句意“要想成为获胜者，你要付出所有，尽最大努力”，此处表目的，所以答案为B。