There is an eraser and two pens on the desk. 桌子上有一块橡皮和两支钢笔。
There are two pens and an eraser on the desk. 桌上有两支钢笔和一块橡皮。
(1)there be的否定句，即在be的后面加上not。
否定形式为：There be + not + (any) + 名词+地点状语。
There is not any cat in the room. 房间里没猫。
There aren't any books on the desk. 桌子上没书。
(2)there be句型的疑问句就是将be提到句首：Be there + (any) +名词+地点状语
肯定回答：Yes, there is / are. 否定回答：No, there isn't / aren't.
-Is there a dog in the picture?画上有一只狗吗
-Are there any boats in the river?河里有船吗
(3)特殊疑问句：How many . . . are there (+地点状语)
某地有多少人或物回答用There be . . .
There's one. / There are two / three / some . . .
有时直接就用数字来回答。One. / Two . . .
-How many students are there in the classroom?教室里有多少学生
-There's only one. / There are nine. 只有一个。/有九个。
(4)如果名词是不可数名词，用：How much + 不可数名词 + is there + 地点状语
How much water is there in the cup?杯中有多少水
