The train is very tall = How tall the train is !

The water in the pond is dirty.

There is a bank right on the street.

There is no doubt about his honesty.

There is no mother but loves her child.

There is no mystery greater than misery

There is no rose but has a thorn. (Affirmative) = Every rose has a thorn

There is none to look after her. 

There is two High School is our village. 

= There are two High School in our village.

There lived a certain king. 

There was dust on the floor.

They came home while I was studying.

They elected him captain.   = He was elected captain by them.

They elected me secretary. (Passive) = I was elected secretary by them.

They had dug the pond=The pond had been dug by them.