What we have described as free morphermes fall into two category s first category is that set of ordinary nouns, verbs 、 adjectives and adverbs that we of as the words that carry the _content" of messages we convey these free mor phemes ane called lexical morphemes and some examples are girl, man, house tiger. sad long yellvu, sincere, open, look, follow, break We can add new lexical morphemes to dhe language rather easily, so they ar e treated as an "open" class of words. Other types of free morphemes are called funcional morphemes Examples are and, but, when, because, on, near, above, in, th e、that、it. them This set consists ts largely of the functional words in the language such as conjunctions, prepositions articles and pro ノーズ Because we almost never add new functional morphemes te the language, they are desCribed as a _"closed" class of words. ...
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