The past perfect is a grammatical combination of past tense with the perfect, itself a combination of tense and aspect, that exists in most Indo-European languages. It is used to refer to an event that had continuing relevance to a past time. Comrie classifies the pluperfect (which is another name for Past Perfect) as an absolute-relative tense because it absolutely (not by context) establishes a deixis (the past) and places the action relative to the deixis (before it). In the sentence "A man who for years had thought he had reached the absolute limit of all possible suffering now found that suffering had no limits, and that he could suffer still more, and more intensely." (from Victor Frankls' Man's Search for Meaning), "had thought" and "had reached" are examples of the pluperfect. It refers to an event (a man thinks he is reaching his limit), which takes place before another event (the man realizes that he has no limit).
Welcome to the past perfect section. You can use this as a resource to find worksheets and activities or even just as inspiration when creating worksheets of your own. Since all the worksheets are free, easy to download, and printable, lesson planning does not need to take up as much of your time as it use to. There are 90 Past Perfect worksheets available to you in this section, as well as more tense worksheets in other subsections. Here is a sample worksheet from this page. It was designed with upper intermediate classes in mind and has actually been updated since it was first posted which shows that Busy Teacher is always evolving. There is just one activity which gives students more practice forming past perfect sentences without taking up too much class time. You might also want to consider using this as a homework assignment. To make things even better, the answer key is included so you can just start printing out worksheets now. For other tense worksheets, look through the rest of this section or others.