The verb be has the following forms:
be动词有下列形式：

The verb be is used in the following patterns:
be动词通常用在下列形式：

1. with a noun:
与名词连用：

My mother is a teacher.

Bill Clinton was the president of the US.

2. with an adjective:
与形容词连用：

This soup is very tasty.

The children were good.

2.1 with the -ing form to make the continuous aspect
与动词ing形式连用表持续

We were walking down the street.

Everything was wet. It had been raining for hours.

2.2 with the -ed form to make the passive voice
与动词ed形式连用表被动

The house was built in 1890.

The street is called Montagu Street.

This car was made in Japan.

3. with a prepositional phrase:
与介词短语连用：

John and his wife are from Manchester.

The flowers are on the table.