HSK Level4 Grammar
■Meaning：I’ve dobe something, I have finished to do..
How to make：…動詞+掉
When 「掉」 is used in this sense, it is normal to attach it to verb to express an action that is done or happened unintentionally. As is common with this type of grammar, the tense is decided by the tense of 「掉」.
■Example sentence (audio)
Who have eaten my cake?
Because I broke computer last week so I bought the new one.