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Q

Hard 1 Mark

English Tenses

What is the difference between 'By June, she will have written the book' and 'By June, she will have been writing the book for eight months'?

A No difference — both are future perfect.

B The first focuses on completion; the second focuses on duration of the ongoing process.

C The first is incorrect.

D The second focuses on the result.

Future perfect = book will be done (result/completion). Future perfect continuous = how long she will have been writing (duration/process).

Reference: English Grammar Guide , Page 12

Perfect = result. Perfect continuous = duration of ongoing process.