1590s, "putting forth activity," present participle adjective from act (v.). Meaning "performing temporary duties" is from 1797.
acting (n.)
c. 1600, "performance of deeds;" 1660s, "performance of plays;" verbal noun from present participle of act (v.). Acting out in psychology is from 1945.
权威例句
1. The president insisted that he was acting out of compassion, not opportunism.
总统坚持说他如此做是出于同情而不是为了投机。
2. I wasn't going to demean myself by acting like a suspicious wife.
我不会表现得像个疑神疑鬼的妻子一样自贬身价。
3. For years the teaching of acting has been shrouded in mystery.
多年以来表演教学一直蒙着神秘的面纱。
4. Acting is definitely a young person's profession in many ways.
从许多方面来说,表演无疑是吃青春饭的行当。
5. She was messing with the coffee pot, which was acting up again.