adj.易流露感情的;论证的;[语法]指示的
He greeted us in a demonstrative manner. 他热情地和我们打招呼。
He was neither impulsive nor demonstrative. 他既不感情用事,又不将喜怒哀乐形之于色。
Some people are more demonstrative than others. 有些人较爱流露感情.
These figures are demonstrative of our progress. 这些数字表明了我们的进步。
"That" is a demonstrative pronoun. that是一个指示代词。