there be 句型怎么提问下面的句子写的对不对,如果不对正确的怎么写树上有一只鸟在唱歌there is a bird

There be 是英语中常用句型， 意思是“有”，表示“人或事物的存在”。There在此结构中是引导词，已经没有副词“那里”的含义。There be 后面的名词是句子的主语，属倒装结构。
结构折叠
1、There be 句型中的be 应和其后出现的主语在数上一致，即“近主原则”，如：
There isa 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 isfive hundred dollars to pay.
There isstill another 20 miles to drive.
Thereis 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. 回家是不可能了。
There is no living with him. 不能和他同住了。
There is no knowing what may happen. 不可能知道会发生什么事。
Therebe结构中的主谓一致折叠
1.当动词be后所接的名词是单数可数名词或不可数名词时，be 应该取单数is；当其后所接的名词是复数的可数名词时，be用复数are。
There's a man at the door.
门口有个人。
There is some apple juice in the bottle.
瓶子里有些苹果汁。
There are some strangers in the street.
大街上有一些陌生人。
2.如果There be 后面是几个并列名词做主语时，动词be的形式和最靠近它的那个名词保持数的一致。
There is an ashtray and two bottles on the shelf. 架子上有一只烟灰缸和两个瓶子。
There are two bottles and an ashtray on the shelf. 架子上有两个瓶子和一个烟灰缸。