Jawaban:

The structure you are referring to is called a subject + verb + complement construction. In this structure, the verb is in its present participle form (ending in -ing) and is used to describe an action or state of being.

The complement can be either a noun, pronoun, adjective, or prepositional phrase that completes the meaning of the sentence. Here are some examples:

She was singing a beautiful song. (complement: a beautiful song)

The children were playing in the park. (complement: in the park)

He is feeling much better now. (complement: much better)

The cat was purring loudly. (complement: loudly)

The flowers are blooming in the garden. (complement: in the garden)

Note that in some cases, the complement can be omitted if the meaning of the sentence is still clear without it.