has not been done before vs had not yet been carried out

Both phrases are correct, but they are used in different contexts. 'Has not been done before' is used to refer to something that has never been done in the past up to the present moment. 'Had not yet been carried out' is used to refer to something that had not been done at a specific point in the past. Therefore, the choice between the two depends on the timeframe you are referring to.

Last updated: March 31, 2024

has not been done before

This phrase is correct and commonly used to indicate that something has never been done up to the present moment.

This phrase is used to emphasize that a particular action or event is unprecedented or novel, up to the current time.

Examples:

This type of experiment has not been done before.
Her approach to problem-solving has not been done before in our company.
The scale of this project has not been done before in our industry.
The level of detail in this report has not been done before by our team.
The technology used in this product has not been done before in the market.

Alternatives:

has never been done before
has not been attempted before
has not been tried before
has not been seen before
has not been explored before

had not yet been carried out

This phrase is correct and is used to indicate that something had not been done at a specific point in the past.

This phrase is used to describe actions or events that were not completed by a certain time in the past, indicating a delay or lack of progress.

Examples:

The experiment had not yet been carried out when the funding was cut.
The construction of the building had not yet been carried out due to legal issues.
The plan had not yet been carried out as of last month.
The changes to the system had not yet been carried out by the deadline.
The repairs had not yet been carried out on the damaged equipment.

Alternatives:

had not been completed yet
had not been executed yet
had not been implemented yet
had not been finalized yet
had not been put into action yet

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has not been done before vs had not yet been carried out