surrounded by the thick forest,the ancient city hadn't been discovered 这句话是什么提前?请详细说明这句话得语法结构

i found myself surrounded by the crowd 16.The teacher stood there,_____ by a group of people.A:surrounded B:having been surrounded C:being surrounded D:to be surrounded The teacher stood there,_____ by a group of people.A:surrounded B:having been surrounded C:being surrounded D:to be surrounded she said that she wanted to die surrounded by the people she loves不是应该是 be surrounded by 为什么die 后面直接接surrounded by 了呢? I am surrounded by 英语翻译(b) If the spheres are allowed to touch in arbitrary ways,awaymust be found to separate them because they could create “pockets” of blackpoints surrounded by all white or surrounded by all white and part of theboundary of the image.Th ________ by the police, the kidnappers had no choice but to surrender.A. Surrounded B. Surrounding C. having surrounded D. To be surrounded After________ by the police for several days,the robber had to give in.surrounded和being surrounded都可以吗? 关于 surrounded ——— by a group of children ,he went on with the story.A surrounded B being surrounded B 怎么不对?正在被. 求解答：The teaching building is ---by many trees,some--over 30 metersA surrounded measuring B surrounded measured Then I found myself surrounded by the boys.这句话对吗?其中surrounded前边不用加be吗?谢谢! be surrounded by/ with区别 It is surrounded---------- by water 英语翻译surrounded by mountainson three sides,the village faces a clear river on the east The house _____ big trees _____ an old man.A.is surrounded by; belongs toC.surrounded by; belongs to 为什么不能选A The house _____ big trees _____ an old man,who died several years ago.A.is surrounded by; belongs toC.surrounded by; belongs to 为什么不能选A To his great surprise,there even appeated a little village on the ground ______ mountains.A.surrounding byB.by surroundingC.surrounded by D.to be surrounded with She said taht she wanted to die surrounded by the people she loves.什么意思谢谢