1. Clicking ▼&► to (un)fold the tree-labels may facilitate locating what you want to find. 2. All politics-oriented teaching videos on this website are embedded solely for the purpose of English learning. They do not necessarily indicate or represent my personal preferences or political positions. 3. This is just one of my several websites. Please click the category-tags below to go to each independent website.
Difference Between Present Perfect and Past Perfect
source: Espresso English 2017年11月10日
Advanced English Grammar Course: http://www.espressoenglish.net/advanc...
Everyday English Speaking Course: https://www.espressoenglish.net/every...
Free E-Book: 500+ Real English Phrases: http://www.espressoenglish.net
# click this line for more grammar videos on perfect & perfect progressive