Relative Clauses — English Bac STM

ضمن برنامج بكالوريا STM

English carries a coefficient of 2 in the Bac Sciences et Technologies Mécaniques (STM) stream. The core subjects are Mathematics and Engineering Sciences (coefficient 7 each), then Physics-Chemistry (coefficient 5). English and Philosophy (coefficient 2) form the margin where candidate rankings and honours are settled. Mastering the structure of a piece of writing matters more here than memorising it.

في الامتحان

Three parts: Reading Comprehension, Language, and Writing (about 180 words). Reading technical drawings and function diagrams builds the same skill an essay needs: breaking an argument into parts and rebuilding it as a coherent plan.

أهداف التعلم

Apply this grammar point accurately in the Language section and in the guided writing of the Bac STM English exam (coefficient 2)
Choose the right relative pronoun by function (who / whom for people, which for things, whose for possession, where for a place)
Distinguish a defining clause from a non-defining clause
Know when that can replace who / which and when it is forbidden
Omit the object relative pronoun correctly in a defining clause

المفاهيم الأساسية

Choosing the relative pronoun

who / whom for people (who as subject, whom as object, more formal), which for things, that for people or things but only in defining clauses, whose for possession, where for a place, when for a time.

Defining clauses

They specify which person / thing is meant and are essential to the meaning: no commas, that is possible, and the object relative pronoun can be omitted. E.g. “The book (that) I read was great.”

Non-defining clauses

They add extra, non-essential information: set off by commas, that is impossible, and the relative pronoun can never be omitted. E.g. “My brother, who lives in Paris, is a doctor.”

الأخطاء الشائعة

Using that after a comma (non-defining clause): “My car, that is red, …” is wrong — use which.

Omitting the subject relative pronoun: “The man is here lives next door” is wrong — a subject pronoun is needed (who / that): “The man who lives next door is here.”

Confusing whose (possession) with who's (contraction of who is): two different words despite the identical pronunciation.

مثال محلول

نص السؤال

Join the two sentences with the right relative pronoun: “This is the house.” / “I grew up in this house.”

التصحيح

Identify the function. “this house” is a place complement in the second sentence.

Choose the pronoun. where replaces a place complement introduced by a preposition: “This is the house where I grew up.”

Alternative with which. You can also keep the preposition explicit: “This is the house which I grew up in.”

افهم الدرس، ثم تدرب.

ينشئ Orka تمارين غير محدودة وامتحانات تجريبية مصححة تغطي برنامج اللغة الإنجليزية في بكالوريا STM، مع تتبع تقدمك درساً بعد درس.

تابع مجاناً مع Orka

3 تمارين للتدرب

التمرين 1

Easy

Complete with who or which: “The scientist ___ discovered penicillin was Alexander Fleming.”

عرض التصحيح

who — the scientist is a person, subject of the verb discovered.

التمرين 2

Medium

Join with whose: “I met a woman. Her son is a famous actor.”

عرض التصحيح

“I met a woman whose son is a famous actor.” — whose replaces the possessive adjective her before the noun son.

التمرين 3

Hard

Correct: “My sister, that works in London, is visiting us next week.”

عرض التصحيح

that is forbidden in a non-defining clause (set off by commas): “My sister, who works in London, is visiting us next week.”

تعمق أكثر في هذا الدرس

أكثر من 50 تمريناً تفاعلياً في هذا الدرس

تمارين يولدها الذكاء الاصطناعي ويصححها خطوة بخطوة حسب مستواك.

تسجيل الدخول مطلوب

اختبار ذكي متكيف

أسئلة تتكيف تلقائياً مع إجاباتك الصحيحة وأخطائك.

تسجيل الدخول مطلوب

تصحيح امتحانات سابقة مرتبطة بالدرس

مواضيع من الامتحانات الوطنية والجهوية السابقة.

تسجيل الدخول مطلوب

خطة مراجعة شخصية

ترتب أولوية هذا الدرس حسب تقدمك الحقيقي في الشعبة.

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بطاقات مراجعة الدرس

الصيغ والتعريفات الأساسية لمراجعة سريعة.

Premium

مدرس ذكي بالدارجة

اطرح أسئلتك حول الدرس واحصل على شرح فوري.

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الأسئلة الشائعة

When can I omit the relative pronoun?

Only in a defining clause where the pronoun works as an object: “The book (that) I read” (that is the object of read). You can never omit a subject relative pronoun or a pronoun in a non-defining clause.

Can which replace that everywhere?

which replaces that in defining clauses about a thing, but only which (never that) is possible in a non-defining clause, the one set off by commas.

How do I recognise a non-defining clause in writing?

It is always set off by commas and could be removed without changing the essential meaning — it only adds extra information, often about a proper noun or an already-identified noun.

English is far from my mechanical specialism — how do I approach it?

Treat it as a system with inputs and outputs: the input is a prompt, the processing is analysis then discussion, the output is a conclusion that settles the question. Learn that flow, apply it to the 31 chapters with two examples each, and one weekly session is enough to raise the mark.

Is this grammar point actually tested on the Bac STM English paper?

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