query: What is the difference between "did" and "have done"?
positive_passages.docid: 13828
positive_passages.text: Canonical Post #2: What is the perfect, and how should I use it?
negative_passages.docid: 30934
negative_passages.text: What is difference between have/get/make someone do something?
negative_passages.docid: 40342
negative_passages.text: 'Have just finished' vs. 'Just finished': What is the difference?
negative_passages.docid: 119719
negative_passages.text: "Do" vs. "does" with multiple singular subjects
negative_passages.docid: 16297
negative_passages.text: When to use "have" and "have got"
negative_passages.docid: 82982
negative_passages.text: past simple vs past perfect
negative_passages.docid: 65426
negative_passages.text: Difference between Simple Past and Past Perfect
negative_passages.docid: 118206
negative_passages.text: Simple past vs. past perfect
negative_passages.docid: 99083
negative_passages.text: "Have had" versus "had"
negative_passages.docid: 81910
negative_passages.text: I had something done vs I got something done
negative_passages.docid: 92969
negative_passages.text: "got" vs. "have got"
negative_passages.docid: 102159
negative_passages.text: “Has been” vs. “was”
negative_passages.docid: 40839
negative_passages.text: Difference between Present Perfect and Past Simple ( I am not a beginner )
negative_passages.docid: 47451
negative_passages.text: Present Perfect or simple past?
negative_passages.docid: 97227
negative_passages.text: "Has" vs. "have"
negative_passages.docid: 40495
negative_passages.text: What's the difference between "has been living" and "has lived"?
negative_passages.docid: 10637
negative_passages.text: difference between "Have been" and "was"