What are the purposes (functions) of these utterances?

1. Its a cold one today. [From one neighbor to another as they pass by each other.]

So why say it? What is the speaker trying to do here?

2. Teacher: What is 5 + 2? Student: 7.

The purpose of the teachers question is not to find out the answer to the question. What is its purpose?

3. I pronounce you man and wife. [Said by minister.]

4. I promise to be there at five.

Why cannot I pronounce somebody man and wife, but I can promise something?

5. Can you lift a hundred pounds?6. Can you pass me the salt?

What is the difference between these two utterances? Can we imagine settings in which Can you lift a hundred pounds? (or, say, Can you lift a hundred pounds for me?) means Will you lift a hundred pounds for me?

C: This looks like this is an egg.

M: Ok well this. . .

Thats exactly what it is!

How did you know?

C: Because it looks like it.

M: Thats what it says,

see look egg, egg. . .

. . .Replica of a dinosaur egg.

From the oviraptor.

Crowley & Jacobss paper Islands of expertise and the development of family scientific literacy.

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