依存关系描述句子中词与词之间的各种语法关系。一句句子可以表示成如下的依存关系树。
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CoreNLP中的依存关系有50来种（都是二元的关系），下面总结：
1. acomp: adjectival complement
用于动词的形容词补语。
动词-->形容词
“She looks very beautiful.” acomp(looks,beautiful)2. advcl: adverbial clause modifier
修饰动词的状语从句。
主句中的动词-->从句中的主要成分
“The accident happened as the night was falling” advcl(happened, falling)**3. advmod: adverb modifier **
（非从句）的副词。
被修饰者-->副词
“Genetically modified food” advmod(modified, genetically)4. agent: agent
用于补充过去时态的动词，通常跟着介词“by”。
过去时态的动词-->补充的名词
“The man has been killed by the police” agent(killed, police)5. amod: adjectival modifier
修饰名词短语的形容修饰语。
名词短语-->形容修饰语
“Sam eats red meat” amod(meat, red)6. appos: appostional modifier
修饰名词短语的名词短语（通常紧挨着）
被修饰的名词短语-->名词短语
“Bill ( John ’s cousin ) ” appos(Bill, cousin)7. aux: auxiliary
助动词
动词-->助动词
“Reagan has died ”aux(died, has)8. auxpass: passive auxiliary
过去式的助动词
动词-->过去式的助动词
“Kennedy has been killed” auxpass(killed, been)9. cc: coordination
第一个并列词--> 协同关系词
“Bill is big and honest” cc(big, and)10. ccomp: clausal complement
被补充说明的词-->补语从句的主要成分（决定语义的词）
“He says that you like to swim” ccomp(says, like)11. conj: conjunct
用协同连词（and、or）连接的两个元素
第一个元素-->第二个元素
“Bill is big and honest” conj(big, honest)12. cop: copula
系动词
表语-->系动词
“Bill is big” cop(big, is)13. csubj: clausual subject
主语从句
谓语动词-->主语从句中的主要成分
“What she said makes sense” csubj(makes, said)14. csubjpass: clausal passive subject
主从被动关系
谓语动词（被动）-->主语从句中的主要成分
“That she lied was suspected by everyone” csubjpass(suspected, lied)15. dep: dependent
系统无法识别的依赖关系
“Then, as if to show that he could, . . . ” dep(show, if)16. det: determiner
限定词
名词短语-->限定词
“The man is here” det(man, the)17. discourse: discourse element
句子主要部分-->感叹词、语气词
"Iguazu is in Argentina :) " discourse(is, :))18. dobj: direct object
动词（给予）-->直接宾语
“She gave me a raise” dobj(gave, raise)19. expl: expletive
从句的主要动词-->there
“There is a ghost in the room” expl(is, There)20. goeswith: goes with
两个本来应该连在一起的词
第二部分-->第一部分
They come here with out legal permission gosewith(out, with)21. iobj: indirect object
动词（给予）-->间接宾语
“She gave me a raise” iobj(gave, me)22. mark: marker
从句的主要成分-->从句修饰的主体（标记语）
”He says that you like to swim“ marker(swim,that)23. mwe: multi-word expression
固定搭配
“I like dogs as well as cats” mwe(well, as)24. neg: negation modifier
否定修饰
被修饰词-->否定词
“Bill is not a scientist” neg(scientist, not)25. nn: noun compound modifier
名词合成修饰
“Oil price futures” nn(futures, oil) nn(futures, price)26. npadvmod: noun phrase as adverbial modifier
名词短语作为副词修饰
副词修饰的词-->名词
“The director is 65 years old” npadvmod(old, years)27. nsubj: nominal subject
名词性主语
句子的主要成分（一般是动词）-->主语
“Clinton defeated Dole” nsubj(defeated, Clinton)28. nsubjpass: passive nominal subject
被动的名词主语
句子的主要成分-->主语（被动）
“Dole was defeated by Clinton” nsubjpass(defeated, Dole)29. num: numeric modifier
数词
名词-->数量
“Sam ate 3 sheep” num(sheep, 3)30. number: element of compound number
复合形式的数词
“I have four thousand sheep” number(thousand, four)31. parataxis: parataxis
并列
主要动词-->并列句的主要成分
“The guy, John said, left early in the morning” parataxis(left, said)32. pcomp: prepositional complement
介词的补语
介词-->从句的主要成分
“We have no information on whether users are at risk” pcomp(on, are)33. pobj: object of a preposition
介词的宾语
介词-->宾语
“I sat on the chair” pobj(on, chair)34. poss: possession modifier
所属修饰
拥有者-->拥有物品
“their offices” poss(offices, their)35. possessive: possessive modifier
所属修饰
拥有者-->'s
“Bill’s clothes” possessive(Bill, ’s)36. preconj: preconjunct
名词短语的前部-->连词前面出现的词（both、either、neither）
“Both the boys and the girls are here” preconj(boys, both)37. predet: predeterminer
名词短语的前部-->在限定词前面出现的词
“All the boys are here” predet(boys, all)38. prep: prepositional modifier
介词修饰
名词-->介词
“I saw a cat in a hat” prep(cat, in)39. prepc: prepositional clausal modifier
介词从句修饰
主句主要词-->从句主要词
“He purchased it without paying a premium” prepc without(purchased, paying)40. prt: phrasal verb particle
动词短语
“They shut down the station” prt(shut, down)41. punct: punctuation
标点
“Go home!” punct(Go, !)42. quantmod: quantifier phrase modifier
数量短语
数量-->数量修饰
“About 200 people came to the party” quantmod(200, About)43. rcmod: relative clause modifier
关系从句修饰
名词短语的第一个词-->关系动词的主要词
“I saw the man you love” rcmod(man, love)44. ref: referent
指代关系
被指代词-->指代词
“I saw the book which you bought” ref (book, which)45. root: root
根节点
“I love French fries.” root(ROOT, love)46. tmod: temporal modifier
时间修饰
句子主要词（通常是动词）-->时间词
“Last night, I swam in the pool” tmod(swam, night)47. vmod: reduced non-finite verbal modifier
非谓语动词（to do）修饰
修饰对象-->非谓语动词
“Points to establish are . . . ” vmod(points, establish)48. xcomp: open clausal complement
开放从句（缺少主语的从句）补语
开放从句的补足对象（动词）-->开放从句的动词
“He says that you like to swim” xcomp(like, swim)49. xsubj: controlling subject
开放从句的动词-->实际控制对象（名词）
“Tom likes to eat fish” xsubj(eat, Tom)
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