future perfect

Future perfect

What is future perfect?

The future perfect tense is for talking about an action that will be completed between now and some point in the future.

1. We use the future perfect to say 'how long' for an action that starts before and continues up to another action or time in the future. Usually we need 'for'.

• When we get married, I'll have known Robert for four years.

• At 4 o'clock, I'll have been in this office for 24 hours.

2. We use the future perfect with a future time word, (and often with 'by') to talk about an action that will finish before a certain time in the future, but we don't know exactly when.

• By 10 o'clock, I will have finished my homework.

• By the time I'm sixty, I will have retired.

When__________(we/do) everything?

We__________ (be) in London for three years next week.

She__________(not/finish) work by seven.

Complete using future perfect

They__________ (arrive) by dinner time.

When__________(you/complete) the work?

I__________(leave) by six.

__________(she/get) home by lunch time?

You__________ (read) the book before the next class.

When will we have done (we/do) everything?

We will have been (be) in London for three years next week.

Complete using future perfect

She will not have finished(not/finish) work by seven.

They will have arrived (arrive) by dinner time.

When will you have completed (you/complete) the work?

I will have left(leave) by six.

Will she have gotten/got(she/get) home by lunch time?

You will have read (read) the book before the next class.

Listening