be eager to这里的to是介词吗?要准确

be eager to这里的to是介词吗?要准确 be dying to这里的to是介词吗?要准确 是be eager to 还是 eager to do sth be eager to 还是be eager for be eager to do be eager to be eager to doing be eager for sth中eager是不及物动词吗?adjust to doing sth中to doing s Be anxious to 和 be eager to 的不同 give way to 这里的to是介词吗? be eager to 为什么放句首时要省略be be favorable to 的to是介词吗