Complete the rules with the examples

• Jason realized that he had done a very risky thing.
• She had travelled all over the Europe by 2010.
• The snowboarder had been lost for three months before he was rescued.
• They had been wandering all day before they realized that they were lost.
• Parents were exhausted because they had been working for two years without a vacation.

Past Perfect

• to describe a completed action that happened before another action in the past

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• with sequencing expressions (when, after, by the time, as soon as) when one event happened before another one

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• with state verbs for actions that were in progress in the past and had an effect on a later action

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Past Perfect Continuous

• to describe a longer action that was followed by another action in the past

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• for actions that were in progress in the past and had an effect on a later action

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