These experiments haven't been initiated yet vs These experiments were not initiated yet

Both phrases are correct, but they are used in different contexts. 'These experiments haven't been initiated yet' is in the present perfect tense, indicating that the initiation has not occurred up to the present moment. 'These experiments were not initiated yet' is in the past tense, suggesting that the initiation did not happen at a specific point in the past.

Last updated: March 15, 2024

These experiments haven't been initiated yet

This phrase is correct and commonly used in English.

This phrase is in the present perfect tense, indicating that the initiation of the experiments has not occurred up to the present moment.

Alternatives:

these experiments have not been initiated yet
these experiments are yet to be initiated
these experiments have yet to be initiated
these experiments are still pending initiation

These experiments were not initiated yet

This phrase is correct but less commonly used in English.

This phrase is in the past tense, suggesting that the initiation of the experiments did not happen at a specific point in the past.

Alternatives:

these experiments had not been initiated yet
these experiments had yet to be initiated
these experiments had yet to be initiated
these experiments had not yet been initiated

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These experiments haven't been initiated yet vs These experiments were not initiated yet