query: past simple vs present perfect in following examples
positive_passages.docid: 47662
positive_passages.text: Present perfect for past action with present effect
negative_passages.docid: 153098
negative_passages.text: Aspect (simple, perfect and progressive): What are the differences?
negative_passages.docid: 9402
negative_passages.text: Difference in sentence meaning between present continuous and simple present constructions
negative_passages.docid: 6542
negative_passages.text: Dilemma: Present Perfect Or Perfect Continuous?
negative_passages.docid: 129248
negative_passages.text: In the tense of present perfect, Are 'recent past' and 'hot news' the same?
negative_passages.docid: 80268
negative_passages.text: Past participle vs being+past participle
negative_passages.docid: 21925
negative_passages.text: Why do people sometimes use the past perfect form of a verb when the past would suffice? (e.g. "you had mentioned")
negative_passages.docid: 153477
negative_passages.text: Present Perfect Usage of "Think" for Recent Past
negative_passages.docid: 17861
negative_passages.text: Is there any difference between Present Perfect and Present Perfect Continuous?
negative_passages.docid: 24744
negative_passages.text: The habitual past "would" versus "simple past" tense
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: 152550
negative_passages.text: present tense with past perfect?
negative_passages.docid: 5719
negative_passages.text: Would it be possible to change past perfect into simple past
negative_passages.docid: 121795
negative_passages.text: What is the difference between 'past' and 'present perfect;?
negative_passages.docid: 150189
negative_passages.text: past continuous or past simple
negative_passages.docid: 143121
negative_passages.text: What's the difference between an adjective and a past participle?
negative_passages.docid: 47451
negative_passages.text: Present Perfect or simple past?