There + be + 主语：
翻译成“有...”，there不表示“那里”倒装结构，主语在最后。
例：

1.There is a boy.
2.There are two girls.
3.There are three oranges on the table.

也要遵循“主谓一致”的原则：

具体规则：不可数名词，单数名词用“is”，复数名词用are。
例：
1.There is ice cream.
2.There is boy.
3.There are two apples.

特例：
复数名词做主语，但表示整体概念/一个整数时，仍然用：“is”
例：
1.There is 500 dollars to pay.
2.There is 5 miles to go.

遵循“就近原则”：

当主语由两部分（或多于两部分）组成时，be根据最近的主语形式进行变化。
例：
1.There is a boy and two girls in the room.
2.There are two girls and a boy in the room.

其他动词也适用于这种倒装句型：

如：lie、stand、live、come等。
例：
1.There lies a river under the bridge.
2.There stands a tall building.
3.There once lived a king in the palace.

“there be”和“have”的区别：

There be 强调“存在，有”；
have强调“拥有”，表所属。
例：
1.There are two books.
2.I have two books.

特殊句型：There is no doing...

相当于 It's impossible to do sth
例：
1.There is no going home.
It's impossible to go home.
2.There is no talking to him.
It's impossible to talk to him.

作业：

翻译：
1.杯子里有些水。
There is water in the cup.

2.桌子上有一支笔和两本书。
There is a pen and two books on the desk.

3.桌子上有两本书和一支笔。
There are two books and a pen on the desk.

4.拥有一切是不可能的。
There is no having everything .