Saturday, December 1, 2012

Past Perfect Progressive Tense

Tense : Past Perfect Progressive Tense 过去完成进行式

Formula : verb to have (had) + been + present participle
                  Ex: had been waiting
                        had been watching

Usage :
- An action which has been happening for a period of time in the past and still continues happening at that time

Examples :
a) -I had been eating pizza for two months.

 b) -The couple had been living in that city since their first child born.

Keywords : -since