您的問題核心與未來完成並沒有關係
重點是: 用complete或finish表示完成一件事的格式
1. finish/complete + 名詞類
例如: We haven't finished THE TEAM PROJECT yet.
When will you complete IT?
2. finish/complete + V-ing
例如: Have you finished READING that novel?
The director has just completed FILMING his 10th feature film.
這類 [直接加V-ing] 的動詞大約100多個, 比較基礎的:
admit, advise, avoid, beat(勝過), begin, bring(造成), catch(發現, 逮到), consider, continue, deny, enjoy, forget, hate, imagine, include=involve, keep, leave, like, love, mean, mention, mind, miss, need (厚加的V-ing是被動的意義), oppose, practice, prefer, prevent, recommend, remember, report, start, stop, suggest, try, keep (on), go (out), look forward to
參考: cambridge dictionaries online extra
在英文中,有一部分動詞通常以動名詞為受詞:
admit, appreciate, avoid, complete, dislike, delay, deny, enjoy, escape, finish, imagine, mind, miss, pospone, practice, quite, resist
花一點時間背一下吧!很重要喔,因為這是少數族群。
希望幫到你
參考: 多年英語文教學經驗