Summarizing is an important skill for English learners. When you summarize a text, you explain the main ideas in a shorter and clearer way. A summary is not a copy of the original text. It is your own version of the most important information. Learning how to summarize can help you understand reading passages better, improve your writing, and prepare for exams.
These principles are particularly useful for Summarize Written Text and Summarize Spoken Text tasks, which require you to identify and communicate the main ideas of a passage clearly and concisely.
Principle 1: Understand the Text Before Writing
The first rule of summarizing is to understand the text before you write anything. Do not start writing your summary after reading only one or two sentences. Read the whole text carefully first.
Ask yourself:
- What is this text mainly about?
- What is the writer trying to explain, describe, or argue?
- What conclusion does the writer want the reader to understand?
If you do not understand the main message, your summary will probably include unnecessary details or miss the real point.
Example
Text: Working from home has become increasingly popular because it offers flexibility and eliminates commuting time. However, many remote workers eventually experience feelings of isolation and reduced collaboration with colleagues. As a result, many companies are now adopting hybrid working arrangements that combine remote and in-office work to balance flexibility with teamwork.
Analysis: The first sentence of a passage describes the convenience of working from home. Later sentences explain that remote workers may feel isolated and that many companies are therefore introducing hybrid working arrangements.
Reading only the first sentence may make you think the passage is mainly about the benefits of remote work. Reading the complete passage shows that its real focus is the development of hybrid working arrangements.
Principle 2: Focus on the Main Idea over Minor Details
After reading the text, look for the main idea. The main idea is the central message of the text. It connects the other information and explains what the passage is mainly trying to communicate.
Sometimes the main idea is written clearly in the first or final paragraph. At other times, you need to understand it from the text as a whole.
Example
Text: Regular exercise strengthens the heart, helps people maintain a healthy weight, reduces stress, and improves sleep.
- Topic: Exercise
- Main idea: Regular exercise improves both physical and mental health.
Analysis: The individual benefits to heart health, weight management, stress reduction, and sleep quality are supporting details. The broader statement that connects them is the main idea.
A good summary should always communicate this central message.
Principle 3: Select the Key Supporting Points
Find the key supporting points. These are the most important ideas that explain or develop the main idea.
A text may include examples, numbers, stories, descriptions, or additional explanations. However, not all of these details should be included in a summary. Choose only the points that are necessary for understanding the text.
Plastic pollution has become a major environmental problem because plastic waste can remain in nature for hundreds of years. It harms wildlife when animals become trapped in plastic or mistake it for food, and it also pollutes rivers and oceans, affecting entire ecosystems. To reduce this problem, many communities have introduced recycling programs and limited the use of single-use plastic bags. For example, after Kenya banned plastic shopping bags in 2017, many cities reported cleaner streets and waterways.
Plastic pollution is a serious environmental issue because it persists for a long time, harms wildlife, and damages ecosystems. Communities are addressing the problem through measures such as recycling programs and reducing single-use plastics.
The summary includes the key supporting points but leaves out the example of Kenya because it illustrates one solution rather than introducing a new main point. Ask yourself whether a detail explains the main idea or simply illustrates it. Important explanations usually belong in a summary; individual illustrations often do not.
Principle 4: Change Grammatical Structures Carefully
When writing a summary, you may need to change the grammatical structure of the original text. This change can help make your writing more concise, combine ideas, remove repetition, and create a smoother summary.
However, grammatical changes must be made carefully. The purpose is not to make the sentence sound more advanced, but to express the main ideas clearly while preserving the original meaning.
1. Change an Active Sentence into a Passive Sentence, or Vice Versa
Changing the voice can help place the most important information at the centre of the summary.
Researchers at the University of Toronto examined how artificial intelligence is being used in medical diagnosis. Their studies showed that some AI tools can help doctors detect certain diseases more quickly and accurately.
Some diseases can be detected more quickly and accurately with AI-assisted diagnosis.
The focus shifted from the researchers to the main finding. The summary also removed less important details, such as where the researchers worked, because they were not necessary to communicate the central idea.
2. Change a Clause into a Phrase
Changing a clause into a phrase can make a summary shorter while keeping the essential meaning.
People who live in large cities are often exposed to traffic noise, air pollution, and crowded public spaces. These conditions can contribute to higher levels of stress.
Urban noise, pollution, and crowding can increase stress.
The clause people who live in large cities was reduced to the more concise idea of urban conditions. The summary also combined the cause and result into one shorter sentence.
3. Change Word Forms
Changing word forms can help combine related ideas and remove unnecessary repetition.
The company decided to replace part of its conventional energy use with renewable sources. This decision reduced its dependence on fossil fuels and improved its environmental performance.
Adopting renewable energy reduced the company’s reliance on fossil fuels.
The verb decided was replaced with the noun-based idea adopting. The summary kept the main result but left out the broader statement about environmental performance because it was not necessary to repeat every detail.
4. Combine Related Sentences
Combining related ideas can make a summary more connected and concise.
Electric vehicles are becoming more common in many countries. They produce fewer direct emissions than conventional vehicles and may also reduce dependence on fossil fuels.
Electric vehicles can reduce emissions and fossil-fuel use.
The two related benefits were combined into one sentence. The detail about electric vehicles becoming more common was omitted because the environmental benefits were the main focus.
Principle 5: Be Careful Not to Change the Meaning
Grammatical changes should improve the structure of a summary without changing important relationships between ideas, such as cause and effect, contrast, time, or condition.
For example, consider this text: The product was expensive and received mixed reviews. Nevertheless, many customers bought it because it offered features that were unavailable elsewhere.
Customers bought the product because it was expensive.
Despite its high price and mixed reviews, customers bought the product for its unique features.
The incorrect version changes the meaning by presenting the high price as the reason for the purchases. The correct version preserves the contrast and identifies the actual reason customers bought the product.
Principle 6: Keep the Summary Short
A summary should be shorter than the original text. Usually, it is much shorter.
Do not include minor details, long examples, personal opinions, or repeated information. If the original text includes a story, summarize the point of the story rather than retelling every event.
Researchers followed a group of office workers who replaced 30 minutes of sitting each day with a brisk walk. After several months, participants showed improvements in cardiovascular fitness, energy levels, and overall well-being compared with those who remained inactive.
Replacing sedentary time with regular physical activity can improve overall health.
The exact type of activity, time of day, and length of practice may not be necessary unless those details are important to the writer’s main message.
Principle 7: Remain Neutral
Another important rule is to stay neutral. A summary should report the writer’s ideas, not your personal reaction.
Avoid phrases such as:
- I think
- In my opinion
- I agree
- This is a bad idea
- This is very interesting
Instead, use phrases such as:
- The writer explains that…
- The text describes…
- The article argues that…
- The passage suggests that…
I think bicycle lanes are a wonderful idea because cities have too many cars.
The writer argues that expanding bicycle lanes could reduce urban traffic and pollution.
The writer’s idea is that cities should build more bicycle lanes because cycling can reduce traffic congestion and pollution. The neutral version reports that position without agreeing or disagreeing with it.
Principle 8: Organize the Summary Clearly
A good summary should be clear and organized. Start with a sentence that introduces the main topic or central message. Then include the most important supporting points in a logical order.
You do not have to follow every sentence of the original text exactly, but the relationships between the ideas should remain clear.
Use linking words such as also, however, because, although, and therefore when they help connect ideas.
Electric vehicles do not produce exhaust emissions while being driven. Battery production requires energy and raw materials. Their total environmental impact depends partly on production methods.
Although electric vehicles produce no exhaust emissions while operating, their overall environmental impact also depends on how their batteries and electricity are produced.
The linking word although clearly shows the contrast between the environmental benefit and the limitation.
Review Your Summary
Finally, always check your summary after writing it.
Ask yourself:
- Did I include the main idea?
- Did I include the essential supporting points?
- Did I leave out unnecessary details?
- Did I use my own words?
- Did I preserve the original meaning?
- Is my summary shorter than the original?
- Is it clear and neutral?
Reviewing helps you notice whether your summary is focused, accurate, and clearly expressed.
Practice Summarize Written Text and Summarize Spoken Text tasks to practice finding main ideas, paraphrasing clearly, and writing concise summaries.
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