just for your info, 啱啱喺baby-center 睇到, 小朋友發音發得唔正確, 我哋唔好直接say No 喎, 佢咁講:
"At this stage, it's better to applaud what she can say rather than try to correct her "mistakes." For instance, if she says, "Want cacka," don't correct with, "No, say cracker." Say, "Okay! Here's a cracker!" It's a subtle difference, but an important one. (Some experts believe that over-correction may contribute to stuttering.)"