我有一个句子不明白,请教英语教师Many of the problems presented by the country’s geographical features found solutions in innovative engineering projects.presented 是及物动词?为什么后面还有by,时态?语态?主谓是哪些?

我有一个句子不明白,请教英语教师
Many of the problems presented by the country’s geographical features found solutions in innovative engineering projects.
presented 是及物动词?为什么后面还有by,时态?语态?主谓是哪些?
谁能详细的讲解下,在下先感谢了.

LZ明鉴; 一楼明显是水平不足,舍近求远,不如看看我的
by 此处为被动意义指示词,做定语修饰语功能词 与present词性无关
关于此句
时态：过去时
语态i：被动
主语：Many of the problems
谓语：present(此处为过去分词,表被动,做定语)
且此句中有明显的personification（拟人）的修辞手法
翻译：许多由国家地理提出的（展现出的）问题都在工程学上找到了答案.
presented by the country's geographical features 用作定语修饰 Many of the problems,如果看不懂可以先删除之,只留主干
变为：Many of the problems found solutions in innovative engineering projects.怎么样,一目了然了吧~
另：This book is written "by" Mr.Li
The house is owned by Li Lei...诸如此类,by都为被动指示词
够详细吧~LZ+++

主语是Many of the problems presented by the country’s geographical features,意思是通过国家的地域特征所呈现出来的许多问题. presented by the country’s geographical features做的是the problems 的定语.
谓语是found,是过去式 "发现"
宾语...

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主语是Many of the problems presented by the country’s geographical features,意思是通过国家的地域特征所呈现出来的许多问题. presented by the country’s geographical features做的是the problems 的定语.
谓语是found,是过去式 "发现"
宾语是solutions "方案"
状语是in innovative engineering projects "在创新工程项目方面"
整个句子的意思是:在创新工程项目方面,通过地域特征呈现出来的许多问题都找到了解决方案.

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是不及物，表示以一般的方法或方式

这句话的意思是说：这个国家许多的地理问题都在具有创新力的工程项目中找得到了解决。
此句的主语是problems，后面的presented by the country's geographical features是后置定语，修饰problems，此句中，presented是过去分词做后置定语，所以后加了by。
相当于一个定语从句：which were presented by t...

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这句话的意思是说：这个国家许多的地理问题都在具有创新力的工程项目中找得到了解决。
此句的主语是problems，后面的presented by the country's geographical features是后置定语，修饰problems，此句中，presented是过去分词做后置定语，所以后加了by。
相当于一个定语从句：which were presented by the country's geograpical features.

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Many of the problems presented by the country’s geographical features 这一部分是句子的主语，其中 presented by the country’s geographical features 用来形容 many of the problems
你可以这样理
[Many of the problems (tha...

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Many of the problems presented by the country’s geographical features 这一部分是句子的主语，其中 presented by the country’s geographical features 用来形容 many of the problems
你可以这样理
[Many of the problems (that was) presented by the country’s geographical features] found solutions in innovative engineering projects.
所以 presented 这里其实相当于被动语态。
如果你把句子重新整理一下：The country's geographical features presented many of the problems. These problems found solutions in innovative engineering.
这样present就很明显是及物动词了。
淘宝：流星天堂中英文翻译

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