用作定语
▲～+n.
 He is an enthusiastic baseball fan.他是个狂热的棒球迷。
She is an enthusiastic golfer.她非常爱好打高尔夫球。
用作表语
▲S+be+～
 I gathered from the way she replied that she wasn't very enthusiastic.从她回答的语气判断,我觉得她不很热心。
▲S+be+～+prep.-phrase
 She is enthusiastic about the new teaching method.她对新的教学方法很热心。
He's very enthusiastic about dancing.他非常喜欢跳舞。
I am enthusiastic over a project for building a new bridge.我热衷于修建一座新桥的规划。
▲S+be+～+to-v
 She's very enthusiastic to read a novel.她非常喜欢读小说。

enthusiastic, ardent, eager, earnest, zealous
参见eager条。

［同义词］   eager, earnest, keen
［反义词］   cool, faint, unenthusiastic