Grammar 101: insider tips and tricks to instantly improve your writing (part 2)

Hannah Lawrence
A professional man sits at a desk, writing notes with a laptop open in front of him.
Reading time: 5 minutes

As a proofreader and editor, I'm often asked to explain the rules of grammar. I answered three of the most common questions in the first post of this series, and now it's time to look at another frequent query: how to use apostrophes.Where do they go? When are they needed? And when should they be left out entirely?

Apostrophes might be small but they can cause big confusion because they are used both to indicate posession and to contract words. But the good news is that there are clear, simple patterns to follow, which we'll explore, along with exceptions to watch out for.Whether you’re writing a report or just a text message, these tips will help you use apostrophes correctly and confidently.

Apostrophes with ease: posession

Apostrophes show possession: they tell us something belongs to someone or something.When we want to show possession for regular plurals (when a word needs an "s" to make it plural), the apostrophe goes at the end and no further "s" is added:

  • The teachers' association
  • The campaigners' letter
  • The dogs' dinner

Whereas, when we want to show posession for either a single noun or an irregular plural (for example, children, geese), we add an "apostrophe s":

  • Sarah's car
  • app's assessment tools
  • The children's presents
  • The geese's pond

Single names that end in an “s” get an “apostrophe s” but plural names get only an apostrophe:

  • Mrs Jones’s car
  • James's cat
  • Whole Foods’ offices
  • Starbucks' nearest store

There's one exception that's important to note: "its" and "it's". The posessive form "its" does not have an apostrophe: "it's" always means "it is".

  • The cat ate its food

Apostrophes with ease: contractions

Contracted words are the combined and shortened forms of two words, which are commonly used in everyday writing and speech to sound more natural and conversational. They're made by omitting certain letters and replacing them with an apostrophe: for example, in "don't", it replaces the missing “o” from not.

When you miss one or more letters, use an apostrophe:

  • "would not" becomes "wouldn’t"
  • "cannot" becomes "can’t"
  • "we are" becomes "we're"
  • and, as before, "it is" becomes "it's"

When not to use apostrophes

A common mistake is using apostrophes when making words plural or when refering to decades and numbers. For example:

  • The 1980s had the best music (not "The 1980's")
  • Many people retire from working in their 70s (not "their 70's")
  • I bought some apples at the store (not "apple's")
Using apostrophes: simple tips to improve your writing skills
Play
Privacy and cookies

By watching, you agree app can share your viewership data for marketing and analytics for one year, revocable by deleting your cookies.

Test your knowledge

Now you know the basic rules of apostrophes, it's time to check your knowledge.

Which sentence is correct?:

  1. The childrens break time has finished
  2. The childrens' break time has finished
  3. The children's break time has finished

It's sentence 3. We want to show posession – break time belongs to the children – and "children" is plural so it gets an "apostrophe s".
Now try these sentences and see if you can figure out which one is right:

  1. When you're walking my dog, its important to remember it's collar.
  2. When you're walking my dog, it's important to remember its collar.
  3. When youre walking my dog, it's important to remember it's collar.

The correct answer is 2. "You're" is a contraction of "you are", "it is important" so we use "it's" and we show that the collar belongs to the dog by using "its". Finally:

  1. Luis' daughter won't go to sleep.
  2. Luis's daughter wont go to sleep.
  3. Luis's daughter won't go to sleep.

Here, the right answer is 3. "Luis" is a single name, so gets an "apostrophe s", and "will not" is shortened to "won't".

Hopefully you now feel more confident in using apostrophes in your writing. Look out for the next post in this series, where we’ll explore more common grammar mistakes and how to avoid them.

Read our blog posts "11 fascinating facts about English"and "Grammar 101: insider tips and tricks to instantly improve your writing (part 1)".

More blogs from app

  • Children engaged in a classroom activity, with colorful educational posters and a banner in the background.

    How to use flipped learning to support your learners

    By
    Reading time: 6 minutes

    What is flipped learning?

    To understand better what flipped learning is, first let’s see how it differs from blended learning, a term with which it is often confused.

    Blended learning is a way of teaching that combines face-to-face classroom teaching with online resources. We freely use online resources to create a more personalized learning experience.

    Flipped learning is a little different. As the name suggests, it "flips" a traditional lesson. It tells us exactly which stages of the lesson should go online. In a flipped learning class, all of the more traditional aspects (also called "study stages"), are completed online and the homework (also called "application stages") comes into the classroom.

    Let’s look at an example.

    A typical receptive skills lesson normally has six stages:

    1. Lead in
    2. Set context
    3. Pre-teach vocabulary
    4. Gist task
    5. Detailed task
    6. Follow up

    With a traditional teaching model, we do the first five stages in class and set the last one for homework. With flipped learning there are a few ways to tackle these stages, but a basic model would look like this:

  • Precision teaching with AI: Aligning GSE objectives with generative AI for targeted materials

    By
    Reading time: 4 minutes

    English teachers today face increasing demands: create engaging content, differentiate instruction and address diverse learner needs – all within a limited time. The rise of Generative AI, like ChatGPT, offers a promising solution. But without proper guidance, AI-generated content can lack educational value. This blog post introduces a practical, research-informed approach to using AI tools aligned with the Global Scale of English (GSE). You will learn how this framework helps educators design accurate, personalized and level-appropriate English teaching materials quickly and confidently.

    Why GSE and AI are a game-changing combination for ELT

    The Global Scale of English (GSE) is a CEFR-aligned framework developed by app, offering detailed "can-do" learning objectives. It includes nearly 4,000 descriptors across speaking, listening, reading and writing skills, offering more precision than traditional level labels like A2 or B1. At the same time, Generative AI tools such as ChatGPT can generate entire lessons, tasks and assessments in seconds. The challenge lies in ensuring this content is aligned with clear pedagogical outcomes.

    Pairing AI’s creative speed with the GSE’s structured outcomes offers a scalable way to meet learner needs without compromising instructional quality.

    Unlocking measurable, differentiated and efficient teaching with GSE and AI

    The GSE makes objectives measurable

    Unlike generic teaching goals, GSE objectives are specific and measurable. For example, a B1-level learner objective might state:

    “Can identify a simple chronological sequence in a recorded narrative or dialogue.” (GSE 43)
    This clarity helps teachers define outcomes and ensure each AI-generated task targets an actual language skill, not just generic content.

    Generative AI enhances productivity

    Teachers using Generative AI can create draft lesson materials in minutes. By inputing a structured prompt such as:

    “Create a B1 reading activity that helps learners summarize the main points of a short article.”
    ChatGPT can instantly generate content that meets the learning goal. When guided by the GSE, AI becomes a collaborative assistant as well as a time-saver.

    The GSE + AI combination supports differentiation

    Because the GSE includes descriptors across a wide proficiency range (from pre-A1 to C2), teachers can tailor AI-generated content to meet the exact needs of their students. Mixed-level classrooms or tutoring contexts benefit especially from this, as teachers can create multiple versions of a task with consistent scaffolding.

    Practical tips

    • Use the GSE Teacher Toolkit to select objectives based on skill, level or function.
    • When prompting ChatGPT, include the GSE descriptor in your input for more precise results.
    • Always review and adapt the AI output to match your learners’ context, culture and curriculum.
    • Create a prompt library mapped to GSE codes to save time in future planning.

    A step-by-step example of the GSE and AI in action

    Here is a typical application of the workflow:

    1. A teacher selects a GSE objective, such as:
      “Can write a basic formal email/letter requesting information.” (GSE 46).
    2. Within seconds, a sample formal email, accompanied by a short reading comprehension task and a vocabulary activity, is generated.
    3. The reading task serves as a model to help learners analyze the structure, tone, and key language features of a well-written email before attempting their own.
    4. The teacher then reviews and refines the output for clarity, appropriateness, and context relevance.

    This process supports targeted teaching while significantly reducing preparation time.

    Overcoming challenges: Ensuring quality and relevance

    Challenge: AI outputs may lack cultural context, level appropriateness or instructional clarity.
    Solution: Always pair AI with professional judgment. Use the GSE to check that skills match the intended outcome, and adjust the complexity of the language as needed.

    Challenge: Teachers may be unfamiliar with how to write effective AI prompts.
    Solution: Start simple with templates like:

    “Create a [skill] activity at [level] that supports this GSE objective: [insert objective].”

    Challenge: Risk of over-relying on AI for instruction.
    Solution: Use AI as a starting point, not the final product. Combine AI-generated content with classroom interaction, feedback and your own creativity.

    Teaching tools that make this easier

    • : for exploring and selecting level-appropriate learning objectives
    • : for generating customizable teaching content
    • GSE Smart Lesson Generator: an AI-powered lesson creation tool developed by app that uses the GSE framework to automatically generate high-quality activities and lesson plans
    • Google Docs or Word: for editing and organizing your materials before class

    Confidently transforming English teaching

    Combining Generative AI with the Global Scale of English allows teachers to design materials that are both fast and focused. The GSE provides the structure; AI provides the speed. Together, they offer a sustainable solution for personalized English instruction that respects both learner needs and instructional quality.

  • Teacher and young students engaging in a classroom activity, surrounded by colorful art supplies and educational materials.

    Back-to-school challenges that teachers face – and how to solve them

    By
    Reading time: 4 minutes

    A new school year brings excitement and opportunity. It also presents challenges for teachers, regardless of their level of experience. Here are common problems that teachers face and simple tips to help you start the year with confidence.

    1. How do I establish effective classroom management and routines?

    The challenge:
    A new year means a new group of students, each with unique personalities and expectations. Setting clear routines and managing classroom behavior can be daunting, especially when students test boundaries or struggle to adjust.

    The solution:
    Set the tone early by communicating clear expectations for behavior, participation and respect. Use visual aids and consistent language to reinforce routines. Involve students in rule-setting to foster ownership and accountability. Consistency and patience are key; routines may take time to solidify, but your commitment will pay off.

    2. How can I build strong relationships with my students?

    The challenge:
    Connecting with a diverse group of learners – some of whom might be eager, while others might be more reserved – can be challenging. Building trust and rapport is essential for engagement and academic success, but it doesn’t happen overnight.

    The solution:
    Dedicate time to getting to know your students as individuals. Use icebreakers, interest surveys and daily check-ins to show you care about their lives beyond academics. Incorporate culturally-responsive teaching practices to respect students’ backgrounds and experiences. Even small gestures, such as greeting students by name and celebrating their achievements, can make a big difference.