Present perfect yet since already just for

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What is the present perfect tense?

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The present perfect tense is used to describe actions that happened at an unspecified time in the past or that started in the past and continue to the present.

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What does 'yet' mean in the present perfect tense?

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'Yet' is used in negative sentences and questions to indicate that something has not happened up to the present time.

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What does 'just' mean in the present perfect tense?

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'Just' is used to indicate that something happened a very short time ago.

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What does 'already' mean in the present perfect tense?

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'Already' is used to indicate that something has happened before now, often sooner than expected.

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What does 'since' mean in the context of time?

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'Since' is used to indicate the starting point of an action that continues to the present.

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What does 'for' mean in the context of time?

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'For' is used to indicate the duration of an action that continues to the present.

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How do you use 'yet' in a question?

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You can use 'yet' in a question to ask if something has happened up to now, e.g., 'Have you finished your homework yet?'

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How do you use 'for' in a sentence?

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You can use 'for' to indicate how long something has been happening, e.g., 'I have lived here for three years.'

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How do you use 'since' in a sentence?

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You can use 'since' to indicate when something started, e.g., 'I have known her since 2010.'

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Can 'just' be used in negative sentences?

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No, 'just' is typically used in positive sentences to indicate a recent action.