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"Have you ever...?" How to use Present Perfect immediately
source: RebeccaESL   2012-03-13
quiz: http://www.engvid.com/present-perfect/ 

Past Simple or Present Perfect?
source: RebeccaESL  2011-10-22
quiz: http://www.engvid.com/past-simple-or-...

Past Simple & Present Perfect
source: Learn English with Rebecca       2012年8月15日
quiz at http://www.engvid.com/past-simple-pre...

Past Simple & Present Perfect
source: JamesESL  2009-07-03

Present Perfect Simple & Continuous
source: JamesESL English Lessons      2009年8月20日

Present Perfect or Past Perfect?
source: EnglishLessons4U    2012-04-09
quiz: http://www.engvid.com/present-perfect... 

last year/month/... vs. in the last year/month/...
source: Learn English with Emma [engVid]    2013-12-23
quiz: http://www.engvid.com/last-year-or-in...

Present Perfect vs Past Simple 
source: Anglo-Link   2011-08-29

Present Perfect Simple & Present Perfect Continuous

Present Perfect Continuous
source: Twominute English   2014年1月7日