there be结构

　　There be 后面的名词是句子的主语，属倒装结构。疑问句形式是将be或will/have/can/must等助动词、情态动词提至there之前，否定形式则直接在be或助动词、情态动词后加not，因此要表达“某个地方或某个时间存在什么事物或人”的时候常用“There be + 名词+ 地点(时间)这一句型。

　　There are some sharks.

　　Excuse me. Is there a repair shop near here for MP3?

　　There are lots of people there who can actually help you.

　　1、There be 句型中的be 应和其后出现的主语在数上一致，即“就近原则”，如：

　　There is a lamp on the table.

　　There are some apples in the bowl.

　　There are five books,two pens and a ruler in the school bag.

　　There is a ruler,two pens and five books in the school bag.

　　2、如果主语是复数名词，却表示一笔金额或一个总数或表达一个单个概念时，则仍用单数be形式，如：

　　There is five hundred dollars to pay.

　　There is still another 20 miles to drive.

　　There is duck and green vegetables for supper.

　　3、There be 中的be 有时可以是lie,stand,used to be,seem to be,appear to be 等，如：

　　There lies a river to the south.

　　There lived an old man in the small house.

　　There stood a temple near the river.

　　There used to be a castle at the foot of the hill.

　　4、There is(was)+no +动词ing结构相当于It is(was) impossible to +动词原形，如：

　　There is no going home. =It is impossible to go home.

　　There is no living with him.=It is impossible to live with him. 。

　　There is no knowing what may happen. =It is impossible to know what may happen