is,后面的名词是不可数的,不可数的名词是要用谓语动词用单数形式.
就近原则,谓语应与最邻近的主语保持一致的
there is a pen and two boxes on the table.
there are two boxes and a pen on the table.
is,后面的名词是不可数的,不可数的名词是要用谓语动词用单数形式.
就近原则,谓语应与最邻近的主语保持一致的
there is a pen and two boxes on the table.
there are two boxes and a pen on the table.