Present Perfect vs. Present Perfect Progressive

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From the course by University of California, Irvine
Grammar and Punctuation
5275 ratings
University of California, Irvine

Grammar and Punctuation

5275 ratings
Course 1 of 5 in the Specialization Academic English: Writing
From the lesson
Verb Tenses and Conjunctions

Meet the Instructors

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