3 名词后的to do做什么成分。
例句：
Since the beginning of 21st century, rapid social development has led to urgent need of new technologies to prop up the social progress.
这个句子应该是正确的吧？其中to prop up the social progress，是什么用法呢？是宾补吗？
还有类似的句子：
Not considering such information may lead to failure to complete the patrol route.
That in turn could easily lead to attempts to bring the U.S. health care system closer to European and Canadian systems
最佳答案 2020-08-26 19:51
1. Since the beginning of 21st century, rapid social development has led to urgent need of new technologies to prop up the social progress.
2. Not considering such information may lead to failure to complete the patrol route.
3. That in turn could easily lead to attempts to bring the U.S. health care system closer to European and Canadian systems.
这三句的划线部分，都是不定式作定语，修饰前面的名词。
lead to 只能接单宾语，宾语后的不定式与宾语之间是定语的修饰关系，不是宾补，不是补充说明的关系。
new technologies to prop up the social progress：支撑维持社会进步的新科技。
failure to complete the patrol route：未能完成巡逻线路。（fail to do 的变式）
attempts to bring the U.S. health care system closer to European and Canadian systems：.......的企图/尝试/努力
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