40 questions on expressing which past action happened first. Use Past Perfect for the earlier action with connectors: before, after, when, and by the time.
Set:
Exercise 1. Before: which action gets Past Perfect?
With 'before', the earlier action uses Past Perfect (had + past participle). Choose the correct form for the first (earlier) action.
Set:
1
She ___ already left before he arrived.
2
Before the match started, the players ___ already warmed up.
3
He ___ the report before his boss asked for it.
4
Before I reached the cinema, the film ___ already started.
5
They ___ dinner before the guests arrived.
6
She ___ her keys before she noticed they were gone.
7
Before the team celebrated, they ___ three matches in a row.
8
I ___ never tasted durian before I went to Thailand.
9
Before she answered, she ___ the question carefully.
10
The volcano ___ already erupted before anyone could evacuate.
The timeline rule
Action 1 (earlier)
Past Perfect
had + past participle
→
Action 2 (later)
Past Simple
verb + -ed / irregular
She had eaten → before he arrived.
After they had signed → the contract was official.
By the time I got there → the film had started.
before
Action 1(Past Perfect)beforeAction 2(Past Simple)
She had left before he arrived.
Before I reached the station, the train had departed.
By the timeAction 2(Past Simple), Action 1had + pp
By the time I arrived, the show had ended.
By 2010, he had written three novels.
Key connectors: quick reference
Connector
Earlier action
Later action
before
Past Perfect (before the comma)
Past Simple
after
Past Perfect (in the after-clause)
Past Simple
when
Past Perfect (already done)
Past Simple (discovery)
by the time
Past Perfect (in main clause)
Past Simple (in by-clause)
as soon as
Past Perfect (first action)
Past Simple
already / just / never
Signal words → use Past Perfect
❌
★ Core rule: The earlier action uses Past Perfect; the later action uses Past Simple. When “before” or “after” already makes the order clear, Past Simple can sometimes replace Past Perfect, but Past Perfect is always safe and precise. She left before he arrived ✅ She had left before he arrived ✅ (more formal/emphatic)