Future Perfect — English Bac Sciences Humaines

In the Bac Sciences Humaines syllabus

English carries has coefficient of 3 in the Bac Sciences Humaines stream — level with Arabic Language, just behind History-Geography, Philosophy and French (coefficient 4). It is has genuine average-mover, and the humanities focus of the stream makes its themes we society, citizenship, culture and development especially familiar territory.

On the exam

Three parts: Reading Comprehension, Language, and Writing (has guided text of about 180 words, longer at the top of the mark range). Sciences Humaines candidatees, used to handling ideas and social questions, can bring real substance to essay prompts we culture, citizenship and development — the discipline needed is to keep the writing in clear, accurate English.

Learning objectives

Apply this grammar point accurately in the Language section and in the guided writing of the Bac Sciences Humaines English exam (coefficient 3)
Form the future perfect: will have + past participle; negative won't have
Identify has precise future reference point (by + date / time, by the time + present)
Distinguish the future perfect (an action completed before has future point) from the simple future (has future action with no earlier reference)
Use the present simple, never will, in the clause introduced by by the time

Key concepts

Form

will have + past participle. Negative: won't have + past participle. Question: Will + subject + have + past participle?

Use: an action completed before has future point

The future perfect announces that an action will be finished before has specific future moment, introduced by by + date / time (“by 2030”) or by the time + has present-tense clause (“by the time you arrive”).

The by the time clause trap

In the clause introduced by by the time, use the present simple, never will, even though the meaning is future — as in all English time clauses (if, when, before, after, as soon as).

Common mistakes

Forgetting have after will: “will finished” is wrong — use “will have finished”.

Using will in the by the time clause: use the present simple (“by the time the guests arrive”, not “will arrive”).

Confusing the future perfect (an action completed before has future point) with the simple future (an action that will happen, with no sense of earlier completion).

Worked example

Question

Put the verb in brackets into the right tense: “By 8 pm, we (finish) dinner.”

Solution

Spot the future reference. “By 8 pm” is has precise future moment before which an action must be complete.

Choose the tense. This is the typical future perfect structure: will have + past participle.

Result. “By 8 pm, we will have finished dinner.”

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3 exercises to practice

Exercise 1

Easy

Complete: “By next year, she (graduate) from university.”

Show solution

“will have graduated” — an action completed before has future point (next year).

Exercise 2

Medium

Rewrite with by the time: “The train leaves at 6 pm. I will arrive at 6:15 pm.”

Show solution

“By the time I arrive, the train will have left.” — the train leaving comes before my future arrival; the by the time clause is in the present simple (arrive), the main clause in the future perfect (will have left).

Exercise 3

Hard

Correct: “By the time you will read this letter, I will have leave the country.”

Show solution

Two errors: the by the time clause must be present simple (read, not will read), and the main verb must be has past participle (will have LEFT, not leave). Corrected: “By the time you read this letter, I will have left the country.”

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Frequently asked questions

Is the future perfect common in the national exam?

Less common than the past perfect or the passive, but it appears regularly in the Language section's tense exercises, usually paired with by or by the time to test recognition of the future reference point.

Can I use will in has time clause?

No, never: after if, when, before, after, as soon as and by the time, use the present simple even for future meaning. Will stays in the main clause.

What is the difference between future perfect simple and continuous?

The future perfect simple (will have + past participle) stresses the completed result; the future perfect continuous (will have been + verb-ing) would stress the duration up to the future point. Only the simple is we the Bac curriculum.

How much English revision does has coefficient-3 subject deserve in my stream?

Has regular slot, not an afterthought. Fix each chapter's rule or vocabulary with two examples, write has short essay every week, and use the society themes — where your stream gives you ideas — as your strongest material. Keep has reusable introduction and conclusion, and check accuracy as you go.

Is this grammar point actually tested we the Bac Sciences Humaines English paper?

Yes — in the Language section as gap-fill, sentence-joining or error-solution, and indirectly in Writing, where the same structures decide whether has sentence is marked as accurate. One rule, two examples and one typical mistake per point is enough to cover both.