... introduced some features of English morpheme system as well as its importance in learning English in general and spelling, developing vocabulary in particular. It’s also play an 17 English ... grammatical morphemes. Note that grammatical morphemes include forms that we can consider to be words like the, a, and, and of and others that make up parts of words like –s and -ed. 7 English morpheme ... → bluish/ greenish • In addition, both of them can change the part of speeds of some words. E.g.: English: work worker, working, hardworking 12 English morpheme system Luong Thuan &...