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Front

Education

Back

had + V3

Front

Usage

Back

Action before another in the past

Front

Example 1

Back

I had eaten before he came.

Front

Example 2

Back

She had left when I arrived.

Front

Marker words

Back

already, just, never

Front

Negation

Back

had not + V3

Front

Question

Back

Had + subject + V3?

Front

Comparison with Past Simple

Back

Past Perfect - earlier, Past Simple - later

Front

Example 3

Back

They had finished before it started.

Front

Example 4

Back

We had seen the movie before.