I have had great deal of trouble keeping up with the rest of students .这句用的是什么语法?
问题描述：
I have had great deal of trouble keeping up with the rest of students .这句用的是什么语法?
答
整个句子最重要的是谓语短语 have trouble doing sth.在做某事上有困难
现在的句子是它的现在完成时
great deal of用来修饰trouble,keeping up with...指doing sth.