1. buried under the ashes.

2. The bodies of people who had died in Pompeii left impressions in the ash...

2. Read the above sentences again and decide which tense is used to talk about:

1. an event in the past?

2. an event that happened earlier, before the other past event in the story?

1. 过去完成时态的含义:

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1. 过去完成时的构成:

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__________________________________________________________Step II. Practice

Task 1 Look at the following three pictures, which of the two sentences best describes each picture on page 7.

Picture 1

A) The film began when they arrived at the cinema.

B) The film had begun when they arrived at the cinema.

Picture 2