there be 句型中主语是：其后所接的名词或名词性短语等.
含有there be的句型（某处有某物）
肯定式
There is a student（主语） in the room.（地点状语）
There are two students（主语）in the room.（地点状语）
要点：
作谓语用的There is /are 要放在句首,而其主语则放在后面,is 后面接单数形式的主语；are 后面则应接复数形式的主语.
2 如果句中有若干个名词作主语,动词be常与后面主语中的第一个名词在数上一致：
例：There is a coffee shop,two bars and four restaurants in the hotel.
否定式
There is not a student in the room.
要点：
2 在be 动词（is /are）后加not即可构成否定.
2 还有一种否定形式,即在there is + no+单数名词或there are + no+复数名词：
例：There is no student in the room.
There are no students in the room.
疑问式
1．一般疑问句
Is there a student in the room?
Are two students in the room?
要点：
2 把be动词(is/ are)提到句首即可构成一般疑问句.
2 回答时用Yes或No：
例：Yes,there is./ No,there isn't.
2．特殊疑问句
How many students are there in the room?
要点：
2 how many 后跟复数名词.
2 特殊疑问句 = how many + 名词复数 + 一般疑问语序 (is/are there).
2 回答时不能用Yes或No,要给出具体的回答：
例：--How many students are there in the room?
--There are two.
注意：
2 there be常带有表示地点的状语,多由介词短语充当.状语的位置多在句尾,有时为了强调,也可置于句首：
例：On the wall there is a picture.
2 Some在否定句和疑问句中常变成any：
例：There are some students in the classroom.(陈诉句)
There aren't any students in the classroom.(否定句)
Are there any students in the classroom?(疑问句)
