there be用法归纳？

1. there be用于一般现在时

There be句型

这里的be是指is和are。there is用于可数名词的单数和不可数名词，there are用于可数名词的复数。

There is a book in my backpack.

我的背包里有一本书。

There is some water in the bottle.

瓶子里有些水。

There are many boys in the park.

公园里有很多男孩。

但是要注意，there be句型遵循就近一致原则，通俗的说就是，这里的be是用is还是are，主要取决于其后的第一个名词的单复数。如果该名词是单数，那就用is，哪怕后面还会有其他名词。如果该名词是复数，那就用are。请看例句：

There is an apple, three bananas and a piece of bread on the table.

桌子上有一个苹果、三根香蕉和一块面包。

上面这个例句中，there be后面第一个名词是an apple，为单数名词，因此这里的be就用is，不受后面three bananas and a piece of bread的影响。但如果把there be后面第一个名词换成three bananas，这里的be就应该用are，如下句：

There are three bananas, an apple and a piece of bread on the table.

桌子上有三根香蕉、一个苹果和一块面包。

2. there be用于一般过去时

There be的一般过去时为there was和there were。there was用于可数名词的单数和不可数名词，there were用于可数名词复数。

There was a concert in the park last weekend.

上周末的时候，这个公园有一场音乐会。

There were five famous musicians at the concert.

在这场音乐会上有5位著名的音乐家。

应当注意，there was和there were也遵循就近一致原则。

There was a guitarist, a violinist and three singers at the concert.

音乐会上有一位吉他手、小提琴手和三位歌唱家。

There were three singers, a guitarist and a violinist at the concert.

音乐会上有三位歌手、一位吉他手和一位小提琴手。

3. there be用于一般将来时

there用于一般将来时有两种表示方式，一种是there will be，可用于可数名词的单数和复数，以及不可数名词。另一种是there is / are going to be，there is going to be用于可数名词单数和不可数名词，there are going to be用于可数名词复数。

There will be a play at the campus next Tuesday.

下周一再校园里会又一场话剧表演。

There will be some coffee offered for free.

将会提供免费咖啡。

There will be many celebrities at the ceremony.

将会有众多名人出席这场庆祝活动。

There is going to be a speech tomorrow.

明天将会有一个讲座。

There are going to be many students at the speech.

将会有很多学生参加这场讲座。

4. there be用于现在完成时

There be用于现在完成时的形式为there have been和there has been。there have been用于可数名词的复数，而there has been则用于可数名词的单数和不可数名词。

There has been a chair behind the desk.

桌子后面曾经摆放着一把椅子。

There has been water in the channel.

河道里曾经有水。

There have been trees in the yard.

院子里曾经有树。

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