【正文】
fast + en Morphology (morpheme) ? Derivational morpheme (派生語素) ? Some do not change the grammatical class ? intercollegiate inter + collegiate ? macroeconomics macro + economics ? telemute tele + mute Morphology (morpheme) ? Inflectional morpheme (屈折語素) ? Represent the concept of tense and aspect, do not change the meaning ? cats cat + s ? playing play + ing ? stopped stop + ped Co