Read the Grammar Rule
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How to Form Future Perfect Continuous Sentences
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Positive Statements
Use the subject + ‘will have been’ + verb-ing to show continuous action up to a future point.
Example: “She will have been teaching for five years by next summer.” / “They will have been working on the campaign for three months by January.”
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Negative Statements
For negative sentences, add ‘not’ after ‘will’ to form ‘will not have been’ or ‘won’t have been’.
Example: “He won’t have been living here long by the time you arrive.” / “They will not have been working there very long.”
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Forming Questions
To ask questions, start with ‘Will’, followed by the subject, ‘have been’, and the verb in -ing form.
Example: “Will you have been studying for a long time by then?” / “Will they have been traveling by this time next month?”