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UNIT 2 — TRAVEL — Lesson 3B
Time Clauses

 
 

The following chart gives you information about the words used in time clauses.

when describes the first action
use with the simple past

Example
I was packing my suitcase when the travel agent called.

after describes the first action
use with the simple past

Example
I packed my suitcase after I washed my clothes.

before describes the second action
use with the simple past

Example
I washed my clothes before I packed my suitcase.

while describes actions that happen at the same time
use with the past continuous

Example
I was thinking about my holiday while I was packing my suitcase.


  • It is important to know that before, while, after and when are also used in the present and future.