USE 1 Completed action before something in the future

FUTURE PERFECT

REMEMBER No Future in Time Clauses

Like all future tenses, the Future Continuous cannot be used in clauses beginning with time expressions such as: when, while, before, after, by the time, as soon as, if, unless, etc. Instead of Future Continuous, Present Continuous is used.

Examples:

• While I am going to be finishing my homework, she is going to make dinner. Not Correct
• While I am finishing my homework, she is going to make dinner. Correct

AND REMEMBER Non-Continuous Verbs / Mixed Verbs

It is important to remember that Non-Continuous Verbs cannot be used in any continuous tenses. Also, certain non-continuous meanings for Mixed Verbs cannot be used in continuous tenses. Instead of using Future Continuous with these verbs, you must use Simple Future.

Examples:

• Jane will be being at my house when you arrive. Not Correct
• Jane will be at my house when you arrive. Correct

FORM Future Perfect with "Will"

[will have + past participle]

Examples:

• You will have perfected your English by the time you come back from the U.S.

In the interrogative form the auxiliary verb is placed before the subject. In the negative form the negative particle not is placed after the auxiliary verb

• Will you have perfected your English by the time you come back from the U.S.?
• You will not have perfected your English by the time you come back from the U.S.

The Future Perfect expresses the idea that something will occur before another action in the future. It can also show that something will happen before a specific time in the future.

Examples:

• By next November, I will have received my promotion.
• By the time he gets home, she will have cleaned the entire house.
• I will have finished this test by 3 o'clock.
• Will she have learned enough Chinese to communicate before she moves to Beijing?
• Sam will probably have completed the proposal by the time he leaves this afternoon.
• By the time I finish this course, I will have taken ten tests.

Notice in the examples above that the reference points (marked in italics) are in Simple Present rather than Simple Future. This is because the interruptions are in time clauses, and you cannot use future tenses in time clauses.

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