there is和are的区别和用法

There is+第三人称单数可数/不可数主语+地点状语（介词短语）；there are+复数主语+地点状语（介词短语）。There is后面用可数名词单数和不可数名词，there are后面用可数名词复数。

there be句型的结构：

1.there is+第三人称单数可数/不可数主语+地点状语（介词短语）

（1）There is a ruler on the desk.书桌上有一把尺。 

（2）There is some water in the bottle.瓶子里有一些水。

2.there are+复数主语+地点状语（介词短语）

（1）There are four apples on the tree.树上有四个苹果。

（2）There are many flowers in the park.公园里有许多花。

3.There is+第三人称单数可数+v-ing+地点状语（介词短语）

（1）There is a bird singing in the tree.树上有一只鸟正在唱歌。

（2）There is a baby sleeping in the room.房间里有一个宝宝正在睡觉。

4.There are+复数主语+v-ing+地点状语（介词短语）

（1）There are some birds singing in the tree.树上有一些鸟正在唱歌。

（2）There are two boys running on the street.街上有两个男孩正在奔跑。