1. PAST PERFECT X PAST PERFECT CONTINUOUS Andressa Ribeiro do Amaral

2. PAST PERFECT  Usado para descrever uma ação que ocorreu no passado ANTES de outra também no passado:  In 2005, I wrote my sister a letter to explain why I had disappeared so suddenly.  He came talk to me when I had already made up my mind.

3. PAST PERFECT  O Past Perfect é formado a partir do auxiliar HAD + verbo principal no PAST PARTICIPLE:  I had left the book on the table.  They hadn’t travelled to Australia yet.  Had you noticed that picture over there?

4. PAST PERFECT CONTINUOUS  Usado para indicar/descrever ações que estiveram em andamento em um momento no passado:  I had been traying to fix that machine all the day long.  In that time, she had been studying hard to pass her exams.

5. PAST PERFECT CONTINUOUS  O Past Perfect Continuous é formado a partir do verbo auxiliar HAD +BEEN + verbo principal no ING:  When I arrived at school, I found that the principal had been talking to all the students about bad behavior.