Expressing Certainty:
"I'm sure you will do great"
"I'm certain that she is a great dancer"

Expressing doubt:
"I doubt that I can run fast"
"I'm not sure I can finish this problem"

To show attention:
"What book are you reading?"
"Are you wearing new shoes?"

To show admiration:
"You have a cute pet!"
"Wow! You are a great singer!"

(Untuk repetition aku kurang paham. Maaf ya..)