morpheme word

例句：

1. 1.The morpheme "a" in the word "apple" is pronounced as /æ/.
   单词“apple”中的词素“a”的发音是/æ/。
2. 2. Morpheme theory is a branch of linguistics that studies the structure and function of words.
   形态学理论是语言学的一个分支，研究单词的结构与功能。
3. 3.In this example, the morpheme "-ing" indicates that the word describes an action.
   在这个例子中，词素“-ing”表示这个单词描述一个动作。