American English File 4B-3rd Session.pdf

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39. • Talk about actions that happened before another
action in the past
• Gives importance to the duration of an activity

49. To talk about a past action
that occurred before another
in the past.
Ex: He had already made
the necessary arrangements
before I arrived.
To talk about a continuous
action that was still in progress
when another action in the past
occurred.
Ex: they had been living in
that city for tem years when it
was destroyed by na
earthquake.
Rule: had + past participle of the
main verb
Rule: had + been + past
participle of the main verb

50. P.
136

51. P.

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