query: present perfect vs past perfect usage
positive_passages.docid: 158076
positive_passages.text: Optional tense back shifting
negative_passages.docid: 104764
negative_passages.text: Use of Past Simple vs Past perfect in sentences with since
negative_passages.docid: 40315
negative_passages.text: When will "Present Perfect vs. Past Tense" cases be affected by culture?
negative_passages.docid: 35695
negative_passages.text: Past perfect or past simple with before
negative_passages.docid: 130978
negative_passages.text: Using of word "just" with present perfect- "your friends have arrived" Vs "you friends have just arrived."
negative_passages.docid: 47662
negative_passages.text: Present perfect for past action with present effect
negative_passages.docid: 109854
negative_passages.text: “have despatched...yesterday” vs. “despatched … yesterday”
negative_passages.docid: 91575
negative_passages.text: Past simple vs past perfect; British- vs American English
negative_passages.docid: 16077
negative_passages.text: Can the present perfect continuous construct be used in passive voice?
negative_passages.docid: 12613
negative_passages.text: How to use "had" correctly in a past perfect paragraph?
negative_passages.docid: 150189
negative_passages.text: past continuous or past simple
negative_passages.docid: 116929
negative_passages.text: Past Simple vs. Past Progressive
negative_passages.docid: 8497
negative_passages.text: When is the past perfect exactly needed?
negative_passages.docid: 127588
negative_passages.text: "Used to" vs "Use to"
negative_passages.docid: 18312
negative_passages.text: When is using the past perfect tense not necessary?
negative_passages.docid: 3233
negative_passages.text: When to use the present or the past perfect tense?
negative_passages.docid: 22902
negative_passages.text: Difference in meaning and use of future perfect forms