表示某个地方存在某物或某人，be动词的单复数必须依主语的变化而变化。牢记以下决口，there be 句型就变的很简单。
there be 有特点，单数不可数用is，复数主语用are。
否定be后把not填，疑问提be there前，
疑否some any换，单数复数就近选。
一、 There be 句型的结构：
1.常见句型结构
（一）There is+单数可数+其他
eg：There is a ruler on the desk. 书桌上有一把尺。
（二）There are+复数主语+其他
eg：There are four apples on the tree. 树上有四个苹果。
There are some flowers in the park. 公园里有许多花。
（三）there is + 不可数名词 +其他 （即使有some 也是 单数）
eg：There is some water in the bottle. 瓶子里有一些水。（水是不可数名词）
2. There be选择就近原则：
There be句型中be动词的单复数形式由最挨近的一项的单复数决定。
如：There is a pencil, three books and many pens on the desk.
(解析：在本句中尽管有铅笔、书和钢笔，但是由于离be动词最近的一项是单数a pencil，因此，be动词用单数is。)
二、There be 句型的疑问句及回答
（一）There be 句型的疑问
1. 在“There is/are...”的疑问句中,要把Be动词放在there之前,并将句号变问 号。
难点:句中出现的some要改成any。
2. 肯定回答为：Yes, there is/are.
3. 否定回答为: No, there isn’t/aren’t.
eg：可数名词单数
肯定句There is an apple on the tree.
疑问句 Is there an apple on the tree?
肯定回答: Yes, there is.
否定回答: No, there isn’t.
eg：可数名词复数
肯定句There are five pens on the desk.
疑问句Are there five pens on the desk?
肯定回答: Yes, there are.
否定回答 No, there aren’t.
eg：不可数名词的时候
肯定句 There is some water in the cup. （水是不可数名词）
否定句 Is there any water in the cup?
肯定回答: Yes, there is.
否定回答: No, there isn’t.
三、There be 句型的否定形式
否定形式只要在be动词后面加not即可，
is not =isn’t ；are not= aren’t
但要注意的是句中如果出现some则改成any.
1.There is a book in the school.
——否定:There is not a book in the school.
2.There are six birds in the tree.
—— 否定:There are not six birds in the tree.
（外来物在树上用介词 in ）
3.There is some water in the bottle.
——否定:There is not any water in the bottle.
4.There are some pears on the tree.
——否定:There are not any pears on the tree..
（树上生长的用介词on）
用There be 的正确形式填空。
1._________seven days in a week.
2.___________27 boys and 32girls in my class.
3.____________any juice in the cup(杯子).
4._____________a lot of sheep on the farm.
5._____________a cap, a book and two pens on the sofa.
答案:
用There be 的正确形式填空。
1.There are
2.There are