Language Acquisition · Topic 4.2
Communication — Speaking and Writing
At Phase 2–3, you communicate using a range of sentence structures and vocabulary. You match your language register to the audience and purpose, and you produce different types of texts using their specific conventions.
What You'll Learn
- Use compound and complex sentences effectively in writing and speaking
- Match register (formal/informal) to task, audience, and purpose
- Apply the conventions of formal letters, emails, and other text types
- Structure paragraphs clearly with a topic sentence and supporting details
- Use a range of connectives and transition words to link ideas
- Demonstrate confidence in spoken communication through interactive tasks
IB Assessment Focus
Criterion C (Speaking/Writing): Communicate information and ideas clearly using appropriate vocabulary and sentence structures for the task.
Criterion D (Language Accuracy): Use grammatically correct compound and complex sentences; spell correctly; use punctuation appropriately.
Phase 2–3 Expectation: Produce structured texts of several paragraphs using a variety of sentence types and appropriate register.
Language Acquisition · Topic 4.2
Sentence Structures
Using a variety of sentence structures makes your writing more engaging and demonstrates greater language control.
Types of Sentences
| Type | Definition | Example |
|---|---|---|
| Simple | One independent clause (one subject + one verb) | "She went to school." |
| Compound | Two independent clauses joined by a coordinating conjunction (FANBOYS: for, and, nor, but, or, yet, so) | "I wanted to go, but it was raining." |
| Complex | An independent clause + at least one dependent clause, joined by a subordinating conjunction | "Although she was tired, she finished her homework." |
| Compound-complex | At least two independent clauses + one dependent clause | "Although it was cold, I went for a walk and I enjoyed it." |
Subordinating Conjunctions (for Complex Sentences)
- Time: when, while, before, after, since, until, as soon as
- Cause: because, since, as
- Contrast: although, even though, whereas, while
- Condition: if, unless, provided that
- Purpose: so that, in order that
Key Skill: At Phase 2–3, you are expected to use a mix of simple, compound, and complex sentences. Using only simple sentences makes your writing appear basic. Overusing complex sentences can make it confusing. A variety shows language mastery.
Language Acquisition · Topic 4.2
Register and Audience
Register is the level of formality you choose based on who you are writing/speaking to and why. Matching register to context is one of the most important communication skills.
Formal vs Informal Register
| Feature | Formal Register | Informal Register |
|---|---|---|
| Contractions | No (write "do not", "I am") | Yes ("don't", "I'm") |
| Slang/colloquial language | Avoided | Acceptable |
| Vocabulary | Precise, subject-specific | Everyday, casual |
| Sentence structure | Complex, well-structured | May be fragmented |
| Tone | Objective, polite, professional | Personal, relaxed |
| Used for | Letters to companies, essays, reports | Messages to friends, diaries |
Critical Rule: Always match your register to the task. An email to a friend uses informal language; an email to a teacher uses formal language. In exams, read the task carefully — it will specify the audience, and your register must match. Getting this wrong loses marks even if your grammar is perfect.
Audience Considerations
Before writing, ask yourself:
- Who is the audience? (Friend, teacher, company, younger student)
- What is the purpose? (Inform, persuade, complain, describe)
- What do they already know? (Adjust vocabulary accordingly)
- What tone is appropriate? (Sympathetic, professional, urgent)
Language Acquisition · Topic 4.2
Text Types and Conventions
Different text types have specific conventions — the structural features expected in each type. Knowing these conventions is essential for full marks.
Formal Letter Conventions
- Your address (top right)
- Date (below your address)
- Recipient's name and address (left side)
- Salutation: "Dear Mr/Ms [surname]," (if you know the name) or "Dear Sir/Madam," (if you don't)
- Opening paragraph: state the purpose clearly
- Body paragraphs: one idea per paragraph with evidence/explanation
- Closing paragraph: summarise and request action if needed
- Signing off: "Yours sincerely," (if you used a name) or "Yours faithfully," (if you used Sir/Madam)
- Your signature and printed name
Other Common Text Types
| Text Type | Key Features | Typical Purpose |
|---|---|---|
| Subject line, salutation, paragraphs, closing | Formal or informal communication | |
| Article | Headline, subheadings, columns, byline | Inform or persuade |
| Report | Title, introduction, sections with headings, conclusion, recommendations | Present information objectively |
| Diary entry | Date, first-person, personal tone, reflection | Record thoughts and experiences |
| Speech | Address audience, rhetorical devices, clear structure, conclusion | Persuade or inform |
Paragraph Structure
Every paragraph should follow this structure:
- Topic sentence: state the main idea of the paragraph
- Supporting detail: provide evidence, example, or explanation
- Linking sentence: connect to the next paragraph or summarise
Language Acquisition · Topic 4.2
Speaking Skills
Speaking assessments test your ability to communicate clearly and interact with others in the target language.
Elements of Effective Speaking
| Element | What It Means | Tips |
|---|---|---|
| Fluency | Ability to speak smoothly with appropriate pace | Practise common phrases; avoid long pauses |
| Pronunciation | Producing sounds correctly | Listen to native speakers; record yourself |
| Vocabulary range | Using varied and precise words | Avoid repeating the same words; use synonyms |
| Interaction | Responding to your partner; asking questions | Listen actively; build on what others say |
| Accuracy | Using correct grammar structures | Practise compound/complex sentences orally |
Useful Phrases for Interaction
- Agreeing: "I agree with you because..." / "That's a good point."
- Disagreeing politely: "I see your point, but I think..." / "Actually, I believe..."
- Asking for clarification: "Could you explain what you mean by...?" / "Could you give an example?"
- Adding to an idea: "Furthermore..." / "In addition to that..." / "Another point is..."
- Summarising: "To sum up..." / "In conclusion, I would say..."
Language Acquisition · Topic 4.2
Worked Examples
These examples show how to structure different types of writing tasks correctly.
EXAMPLE 1Identify the sentence type: "Although it was raining heavily, she decided to walk to school."
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Full Solution
This is a complex sentence.
It has one dependent clause: "Although it was raining heavily" (cannot stand alone — "although" makes it dependent).
It has one independent clause: "she decided to walk to school" (can stand alone as a sentence).
The subordinating conjunction is "although", which shows contrast.
It has one dependent clause: "Although it was raining heavily" (cannot stand alone — "although" makes it dependent).
It has one independent clause: "she decided to walk to school" (can stand alone as a sentence).
The subordinating conjunction is "although", which shows contrast.
EXAMPLE 2A student writes: "Dear company, i want to tell u about a problem I had. it was real bad." What is wrong with this writing?
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Full Solution
The student has used informal register in what should be a formal letter. Problems include:
1. "Dear company" — incorrect; should be "Dear Sir/Madam" or use a specific name
2. "i" — not capitalised
3. "u" — text message abbreviation; inappropriate in formal writing (use "you")
4. "real bad" — colloquial; should be "very poor" or "quite serious"
5. "it was real bad" — too vague; a formal complaint needs specific details
Improved version: "Dear Sir/Madam, I am writing to inform you of a significant problem I experienced with your product. I would appreciate your assistance in resolving this matter."
1. "Dear company" — incorrect; should be "Dear Sir/Madam" or use a specific name
2. "i" — not capitalised
3. "u" — text message abbreviation; inappropriate in formal writing (use "you")
4. "real bad" — colloquial; should be "very poor" or "quite serious"
5. "it was real bad" — too vague; a formal complaint needs specific details
Improved version: "Dear Sir/Madam, I am writing to inform you of a significant problem I experienced with your product. I would appreciate your assistance in resolving this matter."
EXAMPLE 3Write an opening paragraph for a formal letter of complaint to a hotel about a noisy room.
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Full Solution
Dear Manager,
I am writing to express my concern about the quality of service I experienced during my recent stay at your hotel (14–16 March). Although the hotel's facilities were of an acceptable standard, I was extremely disappointed by the excessive noise levels in Room 204, which significantly disrupted my sleep on both nights of my stay. I would be grateful if you could investigate this matter and advise me on what measures can be taken to prevent a recurrence for future guests.
I am writing to express my concern about the quality of service I experienced during my recent stay at your hotel (14–16 March). Although the hotel's facilities were of an acceptable standard, I was extremely disappointed by the excessive noise levels in Room 204, which significantly disrupted my sleep on both nights of my stay. I would be grateful if you could investigate this matter and advise me on what measures can be taken to prevent a recurrence for future guests.
EXAMPLE 4Convert this compound sentence into a complex sentence: "I studied hard and I passed the exam."
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Full Solution
Original (compound): "I studied hard and I passed the exam." (two independent clauses joined by "and")
Complex versions (various possible answers):
• "Because I studied hard, I passed the exam." (cause-and-effect)
• "After studying hard, I passed the exam." (time sequence)
• "Since I had studied hard, I was able to pass the exam." (reason)
Complex sentences show the relationship between ideas more precisely than compound sentences.
Complex versions (various possible answers):
• "Because I studied hard, I passed the exam." (cause-and-effect)
• "After studying hard, I passed the exam." (time sequence)
• "Since I had studied hard, I was able to pass the exam." (reason)
Complex sentences show the relationship between ideas more precisely than compound sentences.
EXAMPLE 5What is the correct sign-off for a formal letter when you began with "Dear Mr Rodriguez"?
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Full Solution
"Yours sincerely,"
The rule is: if you know the recipient's name and used it in the salutation ("Dear Mr Rodriguez"), sign off with "Yours sincerely".
If you did NOT know the name and wrote "Dear Sir/Madam", sign off with "Yours faithfully".
Memory tip: If you're SINCERE, you know their name. If you're FAITHFUL, you don't.
The rule is: if you know the recipient's name and used it in the salutation ("Dear Mr Rodriguez"), sign off with "Yours sincerely".
If you did NOT know the name and wrote "Dear Sir/Madam", sign off with "Yours faithfully".
Memory tip: If you're SINCERE, you know their name. If you're FAITHFUL, you don't.
EXAMPLE 6Write ONE strong paragraph on "the importance of physical exercise", including a topic sentence, evidence, and a link sentence.
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Full Solution
Topic sentence: Regular physical exercise is essential for maintaining both physical and mental health.
Supporting detail: According to health researchers, individuals who exercise at least three times per week have significantly lower rates of heart disease and depression. Furthermore, exercise releases endorphins, which are natural chemicals that improve mood and reduce stress.
Linking sentence: In addition to these physical benefits, exercise also improves concentration and academic performance, making it particularly valuable for young people.
Supporting detail: According to health researchers, individuals who exercise at least three times per week have significantly lower rates of heart disease and depression. Furthermore, exercise releases endorphins, which are natural chemicals that improve mood and reduce stress.
Linking sentence: In addition to these physical benefits, exercise also improves concentration and academic performance, making it particularly valuable for young people.
EXAMPLE 7A task asks you to write a diary entry from the perspective of a character in a book. What register and features should you use?
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Full Solution
A diary entry is typically informal and personal, so:
• Register: informal; can use contractions (didn't, I'm) and personal expressions
• Perspective: first person ("I", "my", "me")
• Features: Date at the top, personal tone, reflective language ("I felt...", "I couldn't believe..."), emotions and opinions expressed directly
• Tense: past tense (describing events) with present reflections
• Audience: private/self — no need to explain context as you would in a letter
Even in an informal diary, ensure your writing is still coherent and varied in structure — the informal register does not mean poor quality.
• Register: informal; can use contractions (didn't, I'm) and personal expressions
• Perspective: first person ("I", "my", "me")
• Features: Date at the top, personal tone, reflective language ("I felt...", "I couldn't believe..."), emotions and opinions expressed directly
• Tense: past tense (describing events) with present reflections
• Audience: private/self — no need to explain context as you would in a letter
Even in an informal diary, ensure your writing is still coherent and varied in structure — the informal register does not mean poor quality.
Language Acquisition · Topic 4.2
Practice Q&A
Attempt each question before revealing the model answer.
IDENTIFYIs this a compound or complex sentence? "She finished her work, so she went outside to play."
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Model Answer
This is a compound sentence. Both clauses ("She finished her work" and "she went outside to play") are independent — they can each stand alone. They are joined by the coordinating conjunction "so" (one of the FANBOYS conjunctions).
DESCRIBEDescribe three features that must appear in a formal letter.
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Model Answer
1. Salutation: "Dear Mr/Ms [name]" or "Dear Sir/Madam" — NOT "Hello" or "Hi".
2. Formal sign-off: "Yours sincerely" (if name used) or "Yours faithfully" (if Sir/Madam used).
3. Formal register: No contractions, no slang, precise vocabulary, and complete sentences organised in paragraphs.
2. Formal sign-off: "Yours sincerely" (if name used) or "Yours faithfully" (if Sir/Madam used).
3. Formal register: No contractions, no slang, precise vocabulary, and complete sentences organised in paragraphs.
REWRITEMake this sentence more formal: "I wanna know when my package is gonna arrive cos I waited ages."
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Model Answer
"I would like to know when my package is expected to arrive, as I have been waiting for a considerable amount of time."
Changes: "wanna" → "would like to"; "gonna" → "expected to"; "cos" → "as"; "I waited ages" → "I have been waiting for a considerable amount of time".
Changes: "wanna" → "would like to"; "gonna" → "expected to"; "cos" → "as"; "I waited ages" → "I have been waiting for a considerable amount of time".
EXPLAINWhat is the purpose of a topic sentence in a paragraph?
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Model Answer
A topic sentence introduces the main idea of the paragraph. It tells the reader what the paragraph is about, so they know what to expect. It should be clear and concise. All other sentences in the paragraph should support, develop, or give evidence for the topic sentence. Without a clear topic sentence, paragraphs can seem disorganised and hard to follow.
APPLYYou need to write an email to your friend about weekend plans. Should you use formal or informal register? Give two specific features of that register.
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Model Answer
Informal register is appropriate when writing to a friend.
Features of informal register:
1. Contractions: Use "I'm", "can't", "we'll" instead of full forms
2. Casual vocabulary: Use everyday words and expressions ("sounds great", "can't wait") rather than formal language ("I would be delighted to")
Features of informal register:
1. Contractions: Use "I'm", "can't", "we'll" instead of full forms
2. Casual vocabulary: Use everyday words and expressions ("sounds great", "can't wait") rather than formal language ("I would be delighted to")
IDENTIFYList FIVE subordinating conjunctions and give an example sentence with each.
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Model Answer
1. Although: "Although it was cold, we went swimming."
2. Because: "She studied hard because she wanted to pass."
3. When: "When the bell rang, everyone stood up."
4. If: "If it rains, we will cancel the trip."
5. Unless: "I will not come unless you invite me."
2. Because: "She studied hard because she wanted to pass."
3. When: "When the bell rang, everyone stood up."
4. If: "If it rains, we will cancel the trip."
5. Unless: "I will not come unless you invite me."
EXPLAINWhy is it important to vary your sentence structures in writing?
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Model Answer
Varying sentence structures makes writing more engaging and fluent. Using only simple sentences makes writing sound repetitive and basic ("He went home. He ate dinner. He watched TV."). Using complex sentences shows you can express relationships between ideas (cause, contrast, time). A mix of sentence types demonstrates language proficiency and holds the reader's interest.
APPLYYou are asked to write a formal report about school lunches. List three features that should appear in your report.
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Model Answer
1. Title clearly stating the topic (e.g., "Report on School Lunch Quality and Provision")
2. Section headings to organise information (e.g., Introduction, Findings, Recommendations)
3. Formal, objective register — no first-person opinion ("I think"); use passive or third person ("It is recommended that...")
2. Section headings to organise information (e.g., Introduction, Findings, Recommendations)
3. Formal, objective register — no first-person opinion ("I think"); use passive or third person ("It is recommended that...")
Language Acquisition · Review
Flashcard Review
Tap each card to reveal the answer. Try to answer from memory first.
What is a compound sentence?
Two independent clauses joined by a coordinating conjunction (FANBOYS: for, and, nor, but, or, yet, so). Example: "I was tired, but I kept going."
Tap to reveal
What is a complex sentence?
An independent clause + a dependent clause joined by a subordinating conjunction. Example: "Although she was tired, she finished her work."
Tap to reveal
What is register?
The level of formality used in language. It is chosen based on the audience (who), purpose (why), and context (where/when).
Tap to reveal
What are the features of a formal letter?
Your address, date, recipient's address, salutation (Dear Mr/Ms...), paragraphs, formal sign-off (Yours sincerely/faithfully), signature.
Tap to reveal
When do you write "Yours sincerely" vs "Yours faithfully"?
"Yours sincerely" = when you used the person's name (Dear Mr Smith). "Yours faithfully" = when you wrote Dear Sir/Madam (don't know the name).
Tap to reveal
What is the FANBOYS acronym?
For, And, Nor, But, Or, Yet, So — the seven coordinating conjunctions used to join independent clauses in compound sentences.
Tap to reveal
Give three subordinating conjunctions showing contrast.
Although, even though, whereas, while (showing contrast between two ideas). Example: "Although it was expensive, she bought it."
Tap to reveal
What is a topic sentence?
The first sentence of a paragraph that states the main idea. All other sentences in the paragraph should support or develop this idea.
Tap to reveal
Name three features of informal register.
Contractions (don't, I'm), casual vocabulary (wanna, gonna), colloquial expressions, first-person opinions, shorter sentences.
Tap to reveal
What is a dependent clause?
A clause that cannot stand alone as a sentence — it depends on an independent clause to make sense. Usually begins with a subordinating conjunction (although, because, when, if).
Tap to reveal
What five things should you consider before starting to write?
Audience (who?), Purpose (why?), Form/text type (what?), Register (formal/informal?), Content (what to include?).
Tap to reveal
What is fluency in speaking?
The ability to speak smoothly at an appropriate pace without excessive hesitation. It involves linking ideas naturally and using a range of vocabulary.
Tap to reveal
Name two ways to disagree politely in English.
"I see your point, but I believe..." / "That's an interesting idea, however I think..." — acknowledge the other person's view before presenting your own.
Tap to reveal
What is the purpose of transition words?
To link ideas between sentences and paragraphs, showing relationships like addition (furthermore), contrast (however), cause (therefore), and sequence (firstly, then).
Tap to reveal
Give an example of a complex-compound sentence.
"Although it was raining, I went for a walk and I enjoyed it." (two independent clauses + one dependent clause)
Tap to reveal
Language Acquisition · Practice Test
Practice Test — 20 Questions
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