Verb tense
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Form
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Use
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Past simple
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S + V-ed + … .
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The past simple shows us that an action was in the past, not at the present.
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S + didn’t + V-inf + … .
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Did + S + V-inf + … ?
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Wh + did + S + V-inf + … ?
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Past continuous
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S + was/were + V-ing + …
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The past continuous shows us that the action was already in progress at a certain time in the past.
The past continuous can also show that an activity was in progress for some time, not just for a moment.
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S + wasn’t/weren’t + V-ing + …
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Was/Were + S + V-ing + …?
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Wh + was/were + S + V-ing + …?
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