What the element ‘-es’ indicates is third person singular, present tense, the element ‘-ed’ past tense, and ‘-ing’ progressive aspect. Since they are the smallest unit of language and meaningful, they are also（）.
- A、phonemes
- B、morphemes
- C、allophones
- D、phones
正确答案:B
答案解析:有
微信扫一扫手机做题