The Past Perfect tense expresses that one past action occurred before another past action or before a specific time in the past. It is formed using had + past participle. The Present Perfect tense indicates an action happened at some unspecified time before the present. It is used to talk about experiences or completed actions without specifying times. It is formed using have/has + past participle.

1. Carlos Escalante Pedraza

2. Past Perfect Tense
 The Past Perfect expresses
the idea that something
occurred before another
action in the past. It can
also show that something
happened before a specific
time in the past.

3. Structure

4. Present Perfect Tense
 We
use
the
Present
Perfect to say that an
action happened at an
unspecified time before
now. The exact time is
not important.

5. Structure