query: “I have studied” vs. “I have been studying”
positive_passages.docid: 17861
positive_passages.text: Is there any difference between Present Perfect and Present Perfect Continuous?
negative_passages.docid: 78336
negative_passages.text: past simple or present perfect
negative_passages.docid: 4548
negative_passages.text: “have found” vs. “found”
negative_passages.docid: 615
negative_passages.text: "I am done" or "I have finished" or "I am finished" or "I finish"
negative_passages.docid: 46370
negative_passages.text: "He has yet to" vs. "he is yet to"
negative_passages.docid: 114229
negative_passages.text: What is the difference between "were" and "have been"?
negative_passages.docid: 152805
negative_passages.text: Using have gone to / been to / been in
negative_passages.docid: 90495
negative_passages.text: Have lived vs. Have been living
negative_passages.docid: 64359
negative_passages.text: to finish vs. to have finished
negative_passages.docid: 125873
negative_passages.text: What is the difference between "I am done" and "I am through"?
negative_passages.docid: 154084
negative_passages.text: Having done something,... vs Doing something,
negative_passages.docid: 49364
negative_passages.text: "In recent years" vs "in the recent years"
negative_passages.docid: 102512
negative_passages.text: What is the difference between "being" and "having been" in this context?
negative_passages.docid: 10664
negative_passages.text: "We have showed that"/ "We have shown that" or "We showed that"?
negative_passages.docid: 109854
negative_passages.text: “have despatched...yesterday” vs. “despatched … yesterday”
negative_passages.docid: 97227
negative_passages.text: "Has" vs. "have"
negative_passages.docid: 151634
negative_passages.text: Which one is correct? "has been taken already" or "has already been taken"