Here are SSML samples.
I can pause.
I can speak in cardinals.
Your number is 10.
Or I can speak in ordinals.
You are 10 in line.
Or I can even speak in digits.
The digits for ten are 10.
I can also substitute phrases, like the W3C.
Finally, I can speak a paragraph with two sentences.
You say, pecan.
I say, pecan.