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Grammatical Accuracy: Meaning and Use of Idiomatic Expressions
Performance Objectives
By the end of the lesson, students should be able to:
- explain meaning of idiomatic expressions;
- interpret idioms;
- use idioms in speech and writing.
Understanding Idiomatic Expressions
English language is rich with expressions that add colour and depth to communication. Among these are idiomatic expressions, often simply called idioms. These are phrases or expressions whose meaning cannot be understood from the ordinary meaning of its individual words.
An idiomatic expression is a group of words established by usage as having a meaning not deducible from those of the individual words.
For example, if someone says, “It’s raining cats and dogs,” they do not mean that actual cats and dogs are falling from the sky. Instead, this idiom means that it is raining very heavily. The meaning is figurative, not literal.
Understanding and using idioms correctly is important for achieving grammatical accuracy and sounding more natural in English. Idioms are common in everyday conversations, literature, and media.

Interpreting Idioms
Interpreting idioms means understanding their figurative meaning within a given context. Since the meaning is not literal, learners must learn the established meaning of each idiom. This skill helps in comprehending spoken and written English more effectively.
To interpret an idiom, consider the overall situation or conversation in which it is used. Often, the context provides clues to the intended meaning. For instance, if a friend says, “I’m feeling under the weather today,” and they also mention having a cough, it is clear they mean they are feeling unwell, not literally beneath the weather.
Here are some common idioms and their interpretations:
- Bite the bullet: To endure a difficult or unpleasant situation.
- Break a leg: Good luck! (Often said to performers before a show).
- Hit the road: To leave or depart.
- Let the cat out of the bag: To accidentally reveal a secret.
- Once in a blue moon: Very rarely.
Types and Categories of Idioms
Idioms can be grouped into different categories based on the themes or subjects they relate to. This categorisation can help in learning and remembering them.
Idioms About People
These idioms describe characteristics, relationships, or situations involving individuals.
- The apple of my eye: A person who is cherished above all others.
Example: My youngest sister is the apple of my eye.
- A chip off the old block: A child who resembles a parent in character or appearance.
Example: John is a chip off the old block; he is as hardworking as his father.
- A big shot: An important or influential person.
Example: The new manager acts like a big shot, always giving orders.
- A busy bee: A very active and hardworking person.
Example: My aunt is a busy bee; she is always working on something.
Idioms About Animals
Many idioms use animal imagery to convey a figurative meaning.
- It is raining cats and dogs: It is raining very heavily.
Example: We cannot go out now; it is raining cats and dogs.
- A lone wolf: A person who prefers to act alone or is solitary.
Example: He is a lone wolf in the class; he rarely joins group activities.
- Kill two birds with one stone: To achieve two aims with a single action.
Example: By studying for both tests at once, I killed two birds with one stone.
- Let sleeping dogs lie: To avoid bringing up an old problem or conflict.
Example: It is better to let sleeping dogs lie and not discuss that argument again.
Idioms About Time
These idioms relate to periods, moments, or the passage of time.
- In the nick of time: Just in time; at the last possible moment.
Example: The ambulance arrived in the nick of time to save the accident victim.
- Once in a blue moon: Very rarely.
Example: My older brother visits us once in a blue moon because he lives abroad.
- Turn back the clock: To return to a past time or situation.
Example: If I could turn back the clock, I would have studied harder for my exams.
- Beat the clock: To finish something before a deadline.
Example: The team worked hard to beat the clock and complete the project on time.
Idioms About Success/Failure
These idioms describe achieving goals or experiencing setbacks.
- Miss the boat: To lose an opportunity by being too slow to act.
Example: I missed the boat on buying those concert tickets because I waited too long.
- Pass with flying colours: To pass an examination or test very easily and with excellent results.
Example: She studied diligently and passed her final exams with flying colours.
- Hit the nail on the head: To describe exactly what is causing a situation or problem.
Example: When he said the problem was lack of communication, he hit the nail on the head.
- Bite the dust: To fail or come to an end.
Example: Their business plan bit the dust after they ran out of funds.
Idioms About Money
These idioms relate to finances, cost, or wealth.
- Cost an arm and a leg: To be very expensive.
Example: That new car must have cost him an arm and a leg.
- Break the bank: To use up all of one’s money; to be very expensive.
Example: Buying a new phone should not break the bank.
- Penny-pincher: A person who is unwilling to spend money.
Example: My uncle is a real penny-pincher; he never buys anything new.
- To be rolling in money: To be very rich.
Example: After winning the lottery, he was rolling in money.
Using Idioms in Speech and Writing
Using idioms effectively can make speech and writing more engaging and natural. However, it is important to use them correctly and in appropriate contexts.
Guidelines for Using Idioms:
- Understand the exact meaning: Never use an idiom if you are unsure of its meaning. Misusing an idiom can lead to confusion or make your communication unclear.
- Consider the context: Idioms are best used when they fit naturally into the conversation or writing. Some idioms are informal and might not be suitable for formal academic writing or professional settings.
- Do not change the words: The words in an idiom are fixed. Changing even one word can alter or destroy the meaning of the idiom. For example, saying “raining cats and dogs and chickens” is incorrect.
- Practice regularly: The more you hear, read, and use idioms, the more comfortable you will become with them.
Examples of Idioms in Sentences:
Here are examples showing how to use idioms in sentences, demonstrating their application in both speech and writing:
- Idiom about people: “My grandmother is getting old, but she is still as fit as a fiddle.” (Meaning: very healthy and strong).
- Idiom about animals: “He was caught red-handed trying to steal the cookies.” (Meaning: caught in the act of doing something wrong).
- Idiom about time: “We need to finish this project against the clock.” (Meaning: with a very tight deadline).
- Idiom about success/failure: “After many attempts, she finally hit the jackpot with her new business idea.” (Meaning: achieved great success, often unexpectedly).
- Idiom about money: “He decided to save for a rainy day instead of spending all his salary.” (Meaning: to save money for a future time when it might be needed).







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