Future tenses

Question 1

future perfect:
will have + past participle

Answer 1

We use the future perfect (will have + past participle) to say something will be finished before a certain time in the future.
This tense is frequently used with the time expressions by Saturday / March / 2030, etc., or in two weeks / months, etc.
by + a time expression = at the latest. With in, you can say in six months or in six months’ time.
We form the negative with won’t have + past participle, and make questions by inverting the subject and will / won’t.

Question 2

future continuous:
will be + verb + -ing

Answer 2

1 We use the future continuous (will be + verb + -ing) to say that an action will be in progress at a certain time in the future.
Compare:
Come at around 7.30. We’ll have dinner at 8.00. (= we will start dinner at 8.00)
and
Don’t phone between 7.00 and 8.30, as we’ll be having dinner. (= at 8.00 we will already have started having dinner)

We form the negative with won’t be + verb + -ing and make questions by inverting the subject and will / won’t.
2 We sometimes use the future continuous, like the present continuous, to talk about things which are already planned or decided.