We've is a contraction, a shortened combination of two words: “we” and “have.” When you say we've finished our homework instead of we have finished our homework, you're using this contraction to make your speech flow more naturally.

Contractions like we've appear constantly in everyday conversation and informal writing. You might say we've been friends for years or we've got a big game tomorrow. The apostrophe shows where letters were removed when the two words merged together.

In formal writing, like essays or business letters, people often write out “we have” instead of using the contraction. But in stories, dialogue, emails to friends, or casual speech, we've sounds more natural and relaxed. When you're writing dialogue for a character in a story, using contractions like we've makes the character sound like a real person talking, not a robot reciting lines.

Other common contractions work the same way: “I've” means “I have,” “they've” means “they have,” and “you've” means “you have.”