They are willing to work hard.句中willing是表语,请问句中的动词不定式是句子什么成分

They are willing to work hard.句中willing是表语,请问句中的动词不定式是句子什么成分 Nothing is impossible to a willing heart 中的不定式是做的什么语法成分? They were willing to work hard to achieve their dreams（转换同义句 Many students say that they are willing to work hard to get 英语句中的成分请问,I am glad to see you.这句话中to see you这个动词不定式是作甚么成分?还 I am willing to do sth 中不定式做什么成分?（关于一些句法） they are willing to give it's hard to navigate.中的to navigate是动词不定式吗?hard是什么成分? 关于句中成分请问,I am glad to see you.这句话中to see you这个动词不定式是作甚么成分?还有 Many students said that they were willing to work hard to ma people are often willing to...其中are often willing to.是进行时还是做 请问底下这句 to find out 不定式是做什么成分啊