Future Perfect is a verb tense used to talk about the future. It
is like the other perfect tenses (present perfect, past perfect)
because it uses a past participle.

STRUCTURE

Subject + Will (not) + Have + Past Participle

Examples:

I will have finished work when you arrive.
She will have eaten dinner by 7:00 pm.

USES

Future Perfect is used for activities that are completed in the
future before another future event.

Example:

Tom will have graduated University by the time Bob starts.

(When Bob starts university, Tom will be finished.)

The other action is given in simple present.

Example:

I will have finished dinner when you arrive.

Remember the time of completion is important.

Examples:

I will take a graphic design class from July 10th - 28th.
I will take a marketing course starting on August 1st.
I will have finished the graphic design course when I start
the marketing course.

The event in the future can simply be a time period. “By” is
often used in this situation.

Examples:

By 2050 scientists will have discovered a cure for cancer.
I will have graduated high school by next year.

Practice Future Perfect with this test:

Future Perfect Test