Eventually, the ancient Greeks established a form of government they called democracy.

In the given sentence, the word Eventually describes when or how often.

Hence, the word Eventually is an Adverb of time.

Even on the coldest winter days, my dog always greets me with a warm and enthusiastic tail wag when I come home.

In the given sentence, the word always describes when or how often.

Hence, the word always is an Adverb of time.

Totalitarian governments frequently allow human rights abuses.

In the given sentence, the word frequently describes when or how often.

Hence, the word frequently is an Adverb of time.