主谓一致是英语基础语法的核心之一。首先，当使用诸如half of, part of, most of, a portion of 等词来引导主语时，动词通常与of后面的名词或代词保持一致。例如：

Most of his money is spent on...

Most of the students are taking an active part in...

其次，在许多由many a 或 more than one 所修饰的词作为主语时，谓语动词通常采用单数形式。然而，当使用more than… of 结构作为主语时，动词应与其后的名词或代词保持一致。例如：

Many a person has read the...

Many a person has read the book.

More than 60 percent of the students are from the...

More than 60 percent of the students are from this city.