@article{oai:kitami-it.repo.nii.ac.jp:02000402,
 author = {伊関 敏之 and Toshiyuki ISEKI},
 journal = {人間科学研究},
 month = {Mar},
 note = {In this paper, we will mainly examine the usage of Present Perfect. In this 
connection, we will especially refer to the comparison of Past Tense and Present 
Perfect Progressive.
In School English Grammar, it is often said that Present Perfect has three or four 
usages, namely, completion･result, experience, and duration.
But making a careful observation about it, its usages overlap with Past Tense and 
Present Perfect Progressive in many respects.
Therefore, we will consider the usage of Present Perfect in various aspects.},
 pages = {37--57},
 title = {英語の現在完了形に関する一考察 －その統語論的・語用論的特徴－},
 volume = {16},
 year = {2023}
}