query: What’s the difference between "I have known her since/for a long time"?
positive_passages.docid: 19869
positive_passages.text: Proper usage of "since" and "from" with regard to duration of time
negative_passages.docid: 55834
negative_passages.text: "is being" vs "has been"
negative_passages.docid: 99083
negative_passages.text: "Have had" versus "had"
negative_passages.docid: 35907
negative_passages.text: Is there a simple and clear way to explain the difference between past simple and present perfect?
negative_passages.docid: 46474
negative_passages.text: Postpositions in English and "ago"
negative_passages.docid: 44966
negative_passages.text: "people aged from 15 to 24" vs "people ages from 15 to 24": which is grammatically correct?
negative_passages.docid: 131914
negative_passages.text: Using "recently" with past simple
negative_passages.docid: 10955
negative_passages.text: Past simple vs present perfect
negative_passages.docid: 14621
negative_passages.text: have lived vs have been living
negative_passages.docid: 76551
negative_passages.text: "What does she look like?" vs. "How does she look like?"
negative_passages.docid: 121795
negative_passages.text: What is the difference between 'past' and 'present perfect;?
negative_passages.docid: 16395
negative_passages.text: when to used had been and have been
negative_passages.docid: 128120
negative_passages.text: "Has been" vs "was"
negative_passages.docid: 94293
negative_passages.text: Past perfect or simple past with 'ago'?
negative_passages.docid: 508
negative_passages.text: "Have been doing" and "have done"
negative_passages.docid: 78800
negative_passages.text: "In a while" vs. "for a while"
negative_passages.docid: 80170
negative_passages.text: "Have you seen her?" or "Did you see her?"