there be就是there is.there are.它们的后面接数字+名词的复数形式。如：我们班有五十个学生。
There are fifty students in our class.它的一般疑问句就是把be动词移到句首大写后面加疑问号就可以了。Are there fifty students in your class?它的特殊疑问句就是用How many+名词的复数形式+are there+其它。For example:How many people are there in your family?
