The text explains the usage and structure of three perfect tenses in English: future perfect, past perfect, and present perfect. It highlights the specific auxiliary verbs and main verb forms required for each tense.
It is uses to indicate that an action will have been completed (finished or "perfected") at some point in the future.
subject + Auxiliary WILL HAVE + Main verb (past participle)
Past Perfect
Basically, when we use the past perfect, we are referring to a time earlier than before right now. It means that there must be two actions happening at different times in the past.
Subject + Auxiliary HAD + Main verb (past participle)
Present Perfect
Use
We use the Present Perfect to talk about: experience, change, continuing situation. There is always a connection with the past and with the present.
Structure
Subject + Auxiliary HAVE or HAS + Main verb (past participle)
