Chinese language takes a different perspective when it comes to tenses. The past perfect tense is no exception. When someone has just done something, instead of changing the tenses, an additional letter is added to the word to show recent action or the time is indicated. For example, instead of saying ‘I have just finished’, in Chinese it is ‘I finished five minutes ago’.
Most sentence structures do not support the past perfect tense and most of the tenses are denoted by a verb and time expression. This requires one to be more specific and to give details like the exact time that the particular action took place. The past perfect tense could also be expressed exactly the same way a present action could be expressed. This is usually for verbs that cannot have an extra letter showing a past activity. Most of the Chinese verbs are not compatible to past perfect tense.