肯定句:There are ten students in the classroom.
否定句:There aren't ten students in the classroom.
一般疑问句:Are there ten students in the classroom?
肯定回答:Yes, there are.
否定回答: No, there aren't.
(注意:There be句型要用就近原则哦。ten students复数,所以是there are, 不能用there is 。疑问句就把be提前即可。否定句在be后加not)