Future perfect continuous tense

Any perfect continuous tense (whether present perfect continuous, past perfect continuous, or future perfect continuous) shows the duration for the completeness of an action within two time frames using for or since.

In future perfect continuous tense, let’s look at some examples to illustrate this scenario.

• Next month, I will have been following a diet for three months.
• Halima will have been waiting for more than five hours by the time Esther arrives.
• I will be tired by the time my cousins get home because I will have been studying for many hours.
• By November, I shall have been teaching at TBOSE Tutorial for three years.
• The future perfect continuous tense is a verb tense that can be used to refer to an action that will be continuing until a certain point of time in the future.

Look at the first example, for instance, I started following a diet, say in August (one time frame in the past), and by next month, October (another time frame in the future), that will make it three months.

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ONE BIG THING to note in a future perfect continuous tense is that the action started at a time in the past and is still continuing in the present until a certain time in the future.

While using this tense, I maintain that it is then reasonable to specify the duration (from the past until that time in the future) using for or since.