Doing VS Having done too much, he has suffered from lung cancer.A. Having smokedB. SmokingC. SmokedD. Being smoked南陵县萃英园中学 夏彬适用于现在分词一般式(doing)的两种情况： (1)现在分词的动作或状态同时与谓语动作发生；eg: Walking down the street, he hears someone calling him. (2)现在分词的动作或状态与谓语动作先后发生，无时间间隔； eg: Arriving at the airport, they found their flight had taken off. 适用于现在分词完成式(having done)的两种情况： (1)现在分词的动作先于谓语动作的发生，并持续一段时间； eg: Having lived in Tianjin for many years, he knows the place very well. (2)现在分词的动作先于谓语动作前多次发生，或有时间间隔；eg: Having seen that Mary danced in the park many times, I knew that she liked dancing.南陵县萃英园中学 夏彬 along with host families, I believe, language travel students are likely to get enough language practice.A. StayB. Having stayedC. StayingD. To stay南陵县萃英园中学 夏彬When different cultures, we often pay attention only to the differences without noticing the many similarities.A. comparedB. being comparedC. comparingD. having compared南陵县萃英园中学 夏彬 himself with necessary knowledge and skills, the young man went to the job market with much confidence.A. EquippedB. EquippingC. Having equippedD. Being equipped南陵县萃英园中学 夏彬 from the cold for three days, the man decided to see a doctor.A. SufferedB. SufferingC. Being suffered D. Having suffered南陵县萃英园中学 夏彬