The Chinese word **代课** (dàikè), meaning "to substitute-teach" or "to cover a class," is a **verb-object compound** formed through logical semantic combination. It consists of **代** (dài), meaning "to substitute for" or "to act on behalf of," and **课** (kè), meaning "class" or "lesson." Grammatically, the first character **代** acts as the verb, and the second character **课** acts as its direct object, creating the transparent meaning "to substitute for (a) class." This formation follows a common pattern in Chinese where two independent morphemes are combined to produce a new, specific concept that is readily understood from the sum of its parts.