------------------------------------ E. tenses ------------------------------------ ----------------------------------- b) (supplementary): been or gone? Present Perfect tense source: Crown Academy of English 2014年9月3/12日 The Present Perfect Tense source: learnamericanenglish 2008-05-30 Present Perfect Tense source: englishgrammarspot 2013-03-25 www.englishgrammarspot.com PRESENT PERFECT source: JenniferESL 2008-12-09 Present Perfect and Past Participle source: Alan Nicholls 2009-11-12 How to use the Present Perfect tense source: MrSkypelessons 2014-4-10 http://skype-lessons.com/ Present Perfect Tense in daily English Conversation - Using HAVE & HAS Correctly source: Learn English with Let's Talk 2017年6月28日 http://www.learnex.in/present-perfect... The Present Perfect Tense source: mmmEnglish 2017年9月12日 the full transcript: https://www.mmmenglish.com/2017/09/13... |
II. The Fundamental Components: Verbs, Nouns, and Pronouns > A. Verbs > 5. tenses > e. perfect & perfect progressive > 2) present perfect & present perfect progressive >