Echo Utterances

An echo utterance is a sentence that is used only in dialogue and confirms what a speaker has just said. 

All kinds of sentences can be echoed:

Statements

1) Will didn't like the meal.

2) He didn't what?

Questions

1) Did you just save my life?

2) Did I just save your wife?

Directives

1) Walk over there.

2) Over there?

Exclamations

1) What a beautiful dog!

2) What a beautiful dog, indeed!