Mixing the tenses! - Past simple and Past continuous

We often use the past continuous and the past simple tenses together. When this happens, the past continuous describes a longer, ‘background’ action or situation and the past simple describes the action or events.

• When I woke up this morning it was raining and my father was singing in the kitchen.
• I was walking home, whistling happily, when I saw two masked men run out of the bank.

Often, the ‘action’ described by the past simple tense interrupts the ‘situation’ described by the past continuous tense.

• I broke my leg when I was skiing.
• I was playing a computer game when the doorbell rang.

Notice that the past continuous describes ‘situations’ that go on for some time – ‘skiing’ and ‘playing’ but the past simple describes ‘actions’ that happen quickly – ‘broke’ and ‘rang’.

Notice too important differences between these two sentences:

• When they arrived, Jeff was cooking dinner. ➔ Jeff started cooking before they arrived.
• When they arrived, Jeff cooked dinner. ➔ Jeff started cooking dinner after they arrived.