“I have missed you, though I have enjoyed your written...

The present perfect tense is often used in English when we are relating two events which happened in the past. It helps to show which event happened first.

The present perfect is often used for an action that started at some time in the past and is still continuing now.

The present perfect shows possibility now and in the future. In this case, they have always the same meaning.

The present perfect is a form regularly derived from a verb and functioning as a noun.