There are three morphemes in the word “reactivate”.
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Derivational morphemes always change the grammatical class of words.
A. 对
B. 错
Bound morphemes include roots and affixes.
A. 对
B. 错
The most important component of a word structure is the affix.
A. 对
B. 错
Inflectional morphemes manifest various grammatical concepts or grammatical categories such as number, tense, degree, and case.
A. 对
B. 错