http://chanyi.new21.net/zbxe/64955
 7. 존재문에서의 일치
Point : [there is/are] 형식으로 쓰이는 문장을 존재문이라고 한다.

There 동사 명사 ~ : 동사의 형태와 수는 명사가 결정한다.

▶ Practice
․ There [exist / exists] more than 2,600 different varieties of palm trees, with varying flowers, leaves, and fruits.
․ There [is / are] no rules of etiquette for eating a Big Mac and a side fries.
․ Traditionally there [have / has] been only tow major political parties in the United States, the Republicans and Democrats.