一、不同之处

1. 用法不同

there be 表示某个时间或地方“存在”某人或某物，而have表示主语“拥有”某人或某物，作宾语的某人或某物属主语所有。

2. 结构不同

there be + sb./sth. +时间/地点(副词或介词短语)；sb./sth. + have +sb./sth. else

There are some children in the garden.花园里有几个孩子。

She has three cars. 她拥有三辆汽车。(汽车是属于她的)
 

二、相同之处

1. 表示某物体在结构上“装有”“配备有”“固有”时，两者均可用。如：

A clock has a round face.= There is a round face on a clock. 钟面上有一个圆型的钟盘。

Each house on the street has a small yard.= There is a small yard in each house on the street. 这条街旁的每栋房子都有一座小花园。


2. 当have表示“包括”时，可以用 There be 替换。如：

A week has seven days. =There are seven days in a week. 一周有七天。


3. 当 have 表示“存在”时，可以用 There be 替换，如：

Our village has only one street.=There is only one street in our village. 我们村里只有一条街。

This country has rich resources, such as oil, coal and iron.=There is rich resources, such as oil, coal and iron, in this country 这个国家有丰富的资源，如石油、煤和铁等。