分类：教育/科学-外语学习
问题：几道英语题1.Withlotsoftrees__D__,theh 
1.Wh lots of trees __D__ ,the house is not easily found.A to surround   B surrounding  C having surrounded   D surrounded2.Professor Smith is said __C__ ,another important discovery in chemistry.A having made B making C to have made D to make3.The sale usually take1.Wh lots of trees __D__ ,the house is not easily found.A to surround   B surrounding  C having surrounded   D surrounded2.Professor Smith is said __C__ ,another important discovery in chemistry.A having made B making C to have made D to make3.The sale usually takes place outside the house ,with the audience __C__ on benches, chair or boxes.A having seated B seating C seated D having been seated关于第一题,我知道B C是一个意思，那只能选D，可是D表示被动，我认为应用主动surrounding 请各位热心的朋友详细解答，谢了。
回答：1)wh后可接doing/todo/done这几种结构, ing与 do皆表示主动,但 ing指现在正在发生或表持续性动作。而 do表动作将要发生,即此动作未发生。 ne表被动。主句为thehouseisnoteasilyfound,主语为thehouse,与trees的关系是被动的,整句的意思为“在树的包围下,那房子不易被发现”。所以第一题正确答案为D。　　２）此句可换成“It is said that Professor Smith have made another important discovery in chemistry.”由结构可首先排除ＡＢ两项，因为is said，having made或making皆为动词，一个句子中不可能同时有两个谓语。to make表动作未开始，用于表示将来的动作，to have made表动作已经完成，由题意可得Professor Smith已经made another important discovery in chemistry。所以第二题正确答案为Ｃ。　３）seat的用法为seat sb,题中the audience与benches, chair or boxes的关系为被动，所以用seated。故第三题正确答案为Ｃ。