Because vs. Because of – English Grammar Exercises for B1
Giving advice to your younger brother, trying to persuade him to choose University X instead of University Y by highlighting its competitive advantages.
Choose the best option (A, B, C, or D) to complete each sentence. Read the context carefully. Pay close attention to the words immediately following the blank to decide whether you need a conjunction for a full clause (Subject + Verb) or a preposition for a noun phrase (highlighting an abstract concept like reputation or facilities).
1 You should definitely choose University X ________ its excellent academic reputation.
(A) because
(B) because of
(C) because off
(D) despite
2 I personally prefer University X ________ it offers a lot of generous scholarships for freshmen.
(A) because of
(B) so
(C) due to
(D) because
3 University Y is currently losing a lot of prospective students ________ the extremely expensive tuition fees.
(A) because of
(B) due of
(C) because
(D) although
4 You shouldn’t go to University Y ________ the campus is located too far from our family house.
(A) because that
(B) therefore
(C) because
(D) because of
5 University X is highly ranked globally ________ its modern research facilities and libraries.
(A) because
(B) because of
(C) because from
(D) owing
6 Many international students apply to this college every year ________ the welcoming and diverse environment.
(A) due to
(B) because of
(C) because
(D) because it
7 I highly recommend this computer science program ________ they have the best tech professors in the country.
(A) because
(B) though
(C) because for
(D) because of
8 Graduates from University X usually get hired very quickly ________ the school’s strong alumni network.
(A) because
(B) because of
(C) so that
(D) because with
9 You will have far more job opportunities ________ University X partners with many global corporations.
(A) due to
(B) because of
(C) because
(D) because to
10 In my opinion, University Y is not a good choice ________ the total lack of student support services.
(A) nevertheless
(B) because
(C) reason of
(D) because of
11 I really want you to study here ________ it is widely known as the top engineering school.
(A) because of
(B) in spite of
(C) because
(D) for because
12 You will definitely enjoy your student life at University X ________ the vibrant club activities.
(A) because of
(B) because
(C) instead of
(D) because by
13 Don’t choose University Y just ________ your best friend is going there; think about your own future!
(A) due to
(B) because
(C) because having
(D) because of
14 University X’s business degree is incredibly valuable ________ the strict practical internship requirements.
(A) because
(B) nevertheless
(C) because of
(D) cause
15 You will easily find an affordable apartment near University X ________ there are many student housing options available.
(A) because of
(B) regardless of
(C) because for
(D) because
16 University X is the ultimate choice ________ its outstanding career center helping students find jobs before graduation.
(A) because off
(B) because of
(C) however
(D) because
17 I am warning you against University Y ________ they recently lost their national accreditation.
(A) because
(B) because of
(C) as a result
(D) because that
18 Students love University X ________ the professors are incredibly approachable and supportive.
(A) since of
(B) despite
(C) because of
(D) because
19 University Y is struggling to attract talented students ________ having a completely outdated curriculum.
(A) consequently
(B) because
(C) because of
(D) because having
20 You should definitely accept University X’s offer ________ the fact that their degree guarantees a high starting salary.
(A) because
(B) reason
(C) although
(D) because of
ANSWER KEY & EXPLANATIONS
1 (B)
- Why it is correct (The Key): “Its excellent academic reputation” is a noun phrase representing an abstract concept. We must use the preposition “because of.”
- Error Analysis: (A) “Because” requires a full clause (Subject + Verb) (Common Mistake). (C) Spelling error (Structural Error). (D) “Despite” means “mặc dù,” which contradicts the logical advice (Meaning Trap).
2 (D)
- Why it is correct (The Key): “It offers a lot of generous scholarships” is a full independent clause (Subject = it, Verb = offers). We must use the conjunction “because.”
- Error Analysis: (A) “Because of” cannot be followed by a full clause (Common Mistake). (B) “So” indicates a result, not a reason (Meaning Trap). (C) “Due to” is a preposition requiring a noun phrase (Common Mistake).
3 (A)
- Why it is correct (The Key): “The extremely expensive tuition fees” is a noun phrase acting as the drawback. We use “because of.”
- Error Analysis: (B) “Due of” is an invalid mix of “due to” and “because of” (Structural Error). (C) “Because” requires a subject and a verb (Common Mistake). (D) “Although” introduces a contrast, which is illogical here (Meaning Trap).
4 (C)
- Why it is correct (The Key): “The campus is located too far” is a full clause. It requires “because.”
- Error Analysis: (A) “Because that” is a grammatical error (Structural Error). (B) “Therefore” shows a result, not a cause (Meaning Trap). (D) “Because of” cannot precede a full clause (Common Mistake).
5 (B)
- Why it is correct (The Key): “Its modern research facilities and libraries” is a noun phrase emphasizing the school’s physical assets. We need “because of.”
- Error Analysis: (A) “Because” requires a clause (Common Mistake). (C) “Because from” is structurally invalid (Structural Error). (D) “Owing” must be followed by “to” to be correct (Structural Error).
6 (B)
- Why it is correct (The Key): “The welcoming and diverse environment” is a noun phrase representing the school’s atmosphere. We use “because of.”
- Error Analysis: (A) “Due to” is grammatically okay but (B) is the direct test target; however, “Due to” often follows the verb ‘to be’, while “because of” modifies the verb phrase ‘apply to this college’. (C) “Because” requires a clause (Common Mistake). (D) “Because it” creates a grammatical error since there is no verb for “it” (Structural Error). Note: In standard choices, “because of” is the clearest fit over “due to” for adverbial clauses of reason.
7 (A)
- Why it is correct (The Key): “They have the best tech professors” is a complete clause. We use “because.”
- Error Analysis: (B) “Though” means “although,” which is illogical (Meaning Trap). (C) “Because for” is invalid (Structural Error). (D) “Because of” cannot precede a clause (Common Mistake).
8 (B)
- Why it is correct (The Key): “The school’s strong alumni network” is a noun phrase. We use “because of.”
- Error Analysis: (A) “Because” needs a conjugated verb (Common Mistake). (C) “So that” indicates purpose, not reason (Meaning Trap). (D) “Because with” is structurally wrong (Structural Error).
9 (C)
- Why it is correct (The Key): “University X partners with many global corporations” is a full clause. We use “because.”
- Error Analysis: (A) & (B) “Due to” and “Because of” cannot precede a full clause (Common Mistake). (D) “Because to” is invalid (Structural Error).
10 (D)
- Why it is correct (The Key): “The total lack of student support services” is a noun phrase acting as the negative reason. We use “because of.”
- Error Analysis: (A) “Nevertheless” means “despite this”, changing the logic completely (Meaning Trap). (B) “Because” needs a full clause (Common Mistake). (C) “Reason of” is structurally incorrect (Structural Error).
11 (C)
- Why it is correct (The Key): “It is widely known as the top engineering school” is a full clause. “Because” is the correct conjunction.
- Error Analysis: (A) “Because of” is used before nouns, not clauses (Common Mistake). (B) “In spite of” gives an opposite meaning (Meaning Trap). (D) “For because” is redundant and invalid (Structural Error).
12 (A)
- Why it is correct (The Key): “The vibrant club activities” is a noun phrase highlighting a specific advantage. We use “because of.”
- Error Analysis: (B) “Because” needs a subject and a verb (Common Mistake). (C) “Instead of” means replacing something, making no sense here (Meaning Trap). (D) “Because by” is a broken structure (Structural Error).
13 (B)
- Why it is correct (The Key): “Your best friend is going there” is a full clause. We use “because.”
- Error Analysis: (A) & (D) “Due to” and “Because of” cannot precede a full clause (Common Mistake). (C) “Because having” is grammatically invalid (Structural Error).
14 (C)
- Why it is correct (The Key): “The strict practical internship requirements” is a noun phrase. We need “because of.”
- Error Analysis: (A) “Because” requires a main verb (Common Mistake). (B) “Nevertheless” is illogical (Meaning Trap). (D) “Cause” as a standalone preposition is overly informal and incorrect (Structural Error).
15 (D)
- Why it is correct (The Key): “There are many student housing options available” is a full clause (Subject = there, Verb = are). We use “because.”
- Error Analysis: (A) “Because of” is for noun phrases (Common Mistake). (B) “Regardless of” breaks the logical advice (Meaning Trap). (C) “Because for” is invalid (Structural Error).
16 (B)
- Why it is correct (The Key): “Its outstanding career center helping students find jobs” is a Noun Phrase modified by a participle (“helping”). Because “helping” is not a main conjugated verb, this block is not a full clause. We must use “because of.”
- Error Analysis: (A) “Because off” is a spelling error (Structural Error). (C) “However” is an adverb of contrast (Meaning Trap). (D) “Because” is a massive Common Mistake here; learners see “helping” and think it is a verb.
17 (A)
- Why it is correct (The Key): “They recently lost their national accreditation” is a full clause. We use “because.”
- Error Analysis: (B) “Because of” cannot take a full clause (Common Mistake). (C) “As a result” points to an effect, not a cause (Meaning Trap). (D) “Because that” is a structural error (Structural Error).
18 (D)
- Why it is correct (The Key): “The professors are incredibly approachable and supportive” is a full independent clause. We use “because.”
- Error Analysis: (A) “Since of” is invalid (Structural Error). (B) “Despite” breaks the logic (Meaning Trap). (C) “Because of” needs to directly introduce a noun phrase, not a full clause (Common Mistake).
19 (C)
- Why it is correct (The Key): “Having a completely outdated curriculum” is a Gerund Phrase. A gerund phrase functions as a noun in a sentence. Therefore, we must use “because of.”
- Error Analysis: (A) “Consequently” (Meaning Trap). (B) “Because” needs a full subject and conjugated verb, which are missing here (Common Mistake). (D) “Because having” is a redundant, broken structure (Structural Error).
20 (D)
- Why it is correct (The Key): “The fact that” acts as a solid noun phrase block. We must use “because of” right before “the fact.”
- Error Analysis: (A) “Because” cannot immediately precede “the fact that” (Common Mistake). (B) “Reason” needs proper prepositional formatting (Structural Error). (C) “Although” breaks the cause/effect logic of persuading the brother (Meaning Trap).
GRAMMAR POINTS TO REMEMBER
- Persuading with “Because of + Noun Phrase”:
- When giving advice or promoting a university, you often highlight its features (e.g., its reputation, the facilities, the alumni network). These are abstract Noun Phrases. Using “Because of” before these phrases makes your argument sound direct, professional, and highly persuasive.
- Example: Choose University X because of its excellent reputation.
- BECAUSE + Clause (Subject + Verb):
- Use Because when you need to explain the mechanics of the school’s advantage using a full sentence. It MUST be followed by a Subject and a conjugated Verb.
- Example: Choose University X because [it] [offers] generous scholarships.
- The “Participle / Gerund” Trap:
- Be careful with sentences like: “University X is great ________ its career center helping students.”
- Many learners see “helping” and think it is a Verb, so they choose “Because”. However, “helping” is just a participle describing the “career center”. The core is still a Noun Phrase (“its career center”). Therefore, you must use Because of.
- Also, if the reason is a Gerund phrase (V-ing) like “having a bad curriculum,” it acts as a noun, so you also use Because of.