query: Usage of "since" and "for" in the present perfect and simple past tense
positive_passages.docid: 19869
positive_passages.text: Proper usage of "since" and "from" with regard to duration of time
negative_passages.docid: 57204
negative_passages.text: present perfect vs past perfect
negative_passages.docid: 80268
negative_passages.text: Past participle vs being+past participle
negative_passages.docid: 96368
negative_passages.text: Simple Past vs. Present Perfect
negative_passages.docid: 152550
negative_passages.text: present tense with past perfect?
negative_passages.docid: 12019
negative_passages.text: Can we use the present perfect in this case?
negative_passages.docid: 65426
negative_passages.text: Difference between Simple Past and Past Perfect
negative_passages.docid: 94293
negative_passages.text: Past perfect or simple past with 'ago'?
negative_passages.docid: 16395
negative_passages.text: when to used had been and have been
negative_passages.docid: 75236
negative_passages.text: "have read" vs "read" - Is this simple present vs present perfect?
negative_passages.docid: 104245
negative_passages.text: did + present tense (or ) Past tense of the verb
negative_passages.docid: 122876
negative_passages.text: Simple past tense vs. perfect past tense
negative_passages.docid: 20928
negative_passages.text: Present Perfect with the word "ago"?
negative_passages.docid: 102159
negative_passages.text: “Has been” vs. “was”
negative_passages.docid: 93810
negative_passages.text: How is "I have come" + infinitive different from Present Perfect?
negative_passages.docid: 97441
negative_passages.text: Present perfect or simple past?
negative_passages.docid: 40839
negative_passages.text: Difference between Present Perfect and Past Simple ( I am not a beginner )