use proper words造句

Since imitation will be most needed for vocalizations that are not proper words, this could explain why sublexical tasks that do not use proper words so strongly link to processing of motor gestures.
About half of its 24 members are affected with a speech disorder that impairs movement of the mouth, lips and tongue and also creates problems with phonemes and grammar, such as using proper word tense.
It's difficult to find use proper words in a sentence. 用use proper words造句挺难的