Present Perfect vs. Present Perfect Progressive

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来自 University of California, Irvine 的课程
语法和标点
6397 个评分
University of California, Irvine
6397 个评分
课程 1(共 5 门,Specialization 学术英语:写作
从本节课中
Verb Tenses and Conjunctions

与讲师见面

  • Tamy Chapman
    Tamy Chapman
    Instructor, International Programs
    University of California Irvine Division of Continuing Education
  • Helen Nam
    Helen Nam
    Instructor
    International Programs, UCI Extension
  • Brad Gilpin
    Brad Gilpin

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