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非謂語動詞主要包括to do, -ing和-ed三種形式，可是其用法非常廣泛，它不僅是高考單項選擇題測試的一個重點，而且也是完形填空、閱讀理解、短文改錯的重要考查內(nèi)容。為了能更好地掌握非謂語動詞的用法，筆者在教學(xué)實踐中總結(jié)出十條實用的解題原則，并且還用相關(guān)的題目來解釋這些原則。根據(jù)這些原則，相信同學(xué)們可以輕松地應(yīng)對非謂語動詞。
　　原則一：兩個句子必須要用連詞連接，如果沒有連詞連接，則需要用非謂語動詞
　　例1. _________ many times, but he still couldn’t understand it.
　　A. Having been told B. Having told C. He had been told D. Though he had been told
　　例2._________ many times, he still couldn’t understand it.
　　A. Having been told B. Having told C. He had been told D. Though he had told
　　解析：例1中有連詞but連接，表明前后都是句子，所以答案為C。
　　例2中后面是一個句子，而且沒有連詞，所以前面不是句子，應(yīng)該用非謂語動詞，根據(jù)句意此處為被動，所以答案為A。
　　原則二：不及物動詞無-ed形式非謂語動詞，及物動詞有賓語時用-ing形式，無賓語時用-ed形式
　　例3. ____________ in the mountains for a week, the two students were finally saved by the local police.
　　A. Having lost B. Lost C. Being lost D. Losing
　　解析：lose為及物動詞，現(xiàn)在后面沒有賓語，所以用-ed形式，答案為B。
　　例4. __________, I really believe that I’d prefer not to make any change now.
　　A. Considered all the possibilities B. Taking all the possibilities into consideration
　　C. Taken all the possibilities into consideration D. Giving all the possibilities
　　解析：把。。�？紤]進來結(jié)構(gòu)為take sth into consideration，現(xiàn)在take后面有賓語all the possibilities，所以用-ing形式，答案為B。
　　原則三：being done 表示“正在被”，一般不作狀語，只作定語。非謂語動詞的完成時形式to have done或having done強調(diào)該動作發(fā)生在句子謂語動詞之前
　　例5. __ to reach them on the phone, we sent an email instead.
　　A. Fail B. Failed C. To fail D. Having failed
　　解析：根據(jù)句意“我們沒有打通電話，就給他們發(fā)了個郵件”，沒有打通電話應(yīng)該發(fā)生在發(fā)郵件之前，所以用having done，答案為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 founded B. having founded C. founding D. to found
　　解析：根據(jù)句意，Tim Bemers-Lee創(chuàng)立萬維網(wǎng)應(yīng)該是過去的事情，而且be considered后面應(yīng)該用動詞不定式，所以應(yīng)該用to have done，答案為A。
    原則四：非謂語動詞作定語時，表示將來用-to do，表正在進行用-ing，表示已經(jīng)完成用-ed
　　例7. The play_____ next month aims mainly to reflect the local culture.
　　A.produced B.being produced
　　C.to be produced D.having been produced
　　解析：根據(jù)本題中的時間狀語next month，可知the play將要于下月被創(chuàng)作出來，表將來應(yīng)該用to do，所以答案為C。
　　例8.The trees _____ in the storm have been moved off the road.
　　A. being blown down B. blown down C. blowing down D. to blow down
　　解析：根據(jù)句意“被暴風(fēng)雨刮倒的樹已經(jīng)從路上移走了”，樹被刮倒是過去已經(jīng)完成的動作，表已經(jīng)完成用-ed形式，所以答案為B。

　　原則五：介詞后跟-ing形式，可以在-ing前加邏輯主語
　　例9. The discovery of new evidence led to ______________.
　　A. the thief having been caught B. the thief to be caught
　　C. catch the thief D. the thief being caught
　　解析：本題led to中的to是介詞，后面應(yīng)該用-ing形式，the thief作-ing的邏輯主語，所以答案為D。
　　例10. At the beginning of class, the noise of desks ____ could be heard outside the classroom.
　　A. opened and closed B. to be opened and closed
　　C. being opened and closed D. to open and close
　　解析：本題the noise of中的of是介詞，后面應(yīng)該用-ing形式，desks作-ing的邏輯主語，所以答案為C。
　　原則六：-ing形式或to do可作主語或賓語，-ed形式則不可以
　　例11. ___________ in a heavy traffic jam is quite an unpleasant experience.
　　A. Caught B. Having caught C. Being caught D. To catch
　　解析：本題中is為系動詞，前面應(yīng)該作主語，用-ing形式，所以答案為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. Examining B. Examined C. Being examined D. Having been examined
　　解析：本題中is為系動詞，前面應(yīng)該作主語，用-ing形式，所以答案為C。
　　原則七：be+-ed+介詞結(jié)構(gòu)�？砂裝e去掉保留-ed+介詞做狀語
　　例13Michael’s new house is like a huge palace, ______with his old one.
　　A. comparing B. compares C. to compare D. compared
　　解析：“和。。。相比較”結(jié)構(gòu)為be compared with，現(xiàn)在做句子的狀語，所以只保留非謂語動詞，把動詞be去掉，答案為D。
　　例14 _______ with a difficult situation, Arnold decided to ask his boss for advice.
　　A. To face B. Having faced C. Faced D. Facing
　　解析：“面對”結(jié)構(gòu)為be faced with, 現(xiàn)在做句子的狀語，所以只保留非謂語動詞，把動詞be去掉，答案為C。
　　原則八：非謂語動詞作狀語，其邏輯主語必須和句子主語保持一致，和句子主語構(gòu)成主謂關(guān)系時用-ing形式，構(gòu)成動賓關(guān)系是用-ed形式。其邏輯主語和句子主語不一致時，要在非謂語動詞前加邏輯主語，構(gòu)成獨立主格結(jié)構(gòu)
　　例15. ____ twice, the postman refused to deliver our letters unless we changed our dog.
　　A. Being bitten B. Bitten C. Having bitten D. To be bitten
　　解析：本題考查非謂語動詞作狀語，其邏輯主語應(yīng)和句子主語the postman一致，the postman應(yīng)該是被咬，所以答案為B。
　　例16._______ in the fields on a March afternoon, he could feel the warmth of spring.
　　A. To walk. B. Walking C. Walked D. Having walked
　　解析：本題考查非謂語動詞作狀語，其邏輯主語應(yīng)和句子主語he一致, he 和walk應(yīng)該是主動關(guān)系，所以答案為B。
　　例17. While watching television, __________.
　　A. the doorbell rang B. the doorbell rings
　　C. we heard the doorbell ring D. we heard the doorbell rings
　　解析：根據(jù)“非謂語動詞作狀語，其邏輯主語必須和句子主語保持一致”的原則，watching的邏輯主語應(yīng)和后面句子主語一致，所以句子主語應(yīng)為“we”，答案為C。
　　例18. The children went home from the grammar school, their lessons ____ for the day.
　　A. finishing B. finished C. had finished D. were finished
　　解析：本題沒有連詞，所以后面應(yīng)用非謂語動詞，the lessons是非謂語動詞的邏輯主語，和非謂語動詞構(gòu)成獨立主格結(jié)構(gòu)。根據(jù)句意應(yīng)是“被完成”，所以答案為B。
　　原則九：不定式做狀語一般有兩種：目的狀語和出乎意料的結(jié)果狀語(表示順其自然的結(jié)果用-ing形式)。另外，某些形容詞(表喜、怒、哀、樂)做表語后跟不定式可以表示原因
　　例19._____, you need to give all you have and try your best.
　　A Being a winner B To be a winner C Be a winner D Having been a winner
　　解析：根據(jù)句意“要想成為獲勝者，你要付出所有，盡最大努力”，此處表目的，所以答案為B。
　　例20. The news reporters hurried to the airport, only _______ the film stars had left.
　　A. to tell B. to be told C. telling D. told
　　解析：本句句意為“記者們匆匆趕到機場，卻被告知明星們已經(jīng)走了”，表出乎意料的結(jié)果常常用only to do，所以答案為B。
　　例21. The glass doors have taken the place of the wooden ones at the entrance, ________ in the natural light during the day.
　　A. to let B. letting C. let D. having let
　　解析：本題句意為“玻璃門替換了木頭門，自然光就進來了”，自然光進來時順其自然的結(jié)果，所以用doing, 答案為B。
　　例22.How glad I am ___________ you!
　　A. seeing B. to see C. saw D. having seen
　　解析： 本題是I am glad to see you 的感嘆句形式，to see you 是原因狀語，答案為B。
　　原則十：非謂語動詞的否定原則是在非謂語動詞前加not，有not to do, not doing, not having done, not to have done幾種形式
　　例23______that he was in great danger, Eric walked deeper into the forest.
　　A. Not realized B. Not to realize C. Not realizing D. Not to have realized
　　解析： 本題考查doing的否定形式not doing，答案為 C。
　　例24. What worried him most was ______ to visit his sick child.
　　A. his being not allowed B. his not being allowed
　　C. his not allowing D. having not been allowed
　　解析：本題考查being done的否定形式not being done; his 為not being done的邏輯主語，所以答案為B。
　　例25. Sarah has decided ________ away on holiday this summer.
　　A. don’t go B. to not go C. not going D. not to go
　　解析：本題考查to do的否定形式not to do, 所以答案為D。