Using an idiom correctly and naturally is one of the clearest signs of fluency to a native speaker or examiner. The key word is naturally — forced or misused idioms sound worse than none at all. Here are ten that are genuinely useful in everyday and exam contexts.
To start something. "Let's get the ball rolling on the project this week."
Feeling slightly ill. "I'm a bit under the weather today, so I'll rest."
In agreement. "Before we proceed, let's make sure we're on the same page."
To ease tension in a new or awkward situation. "She told a joke to break the ice at the interview."
Something very easy. "That exam was a piece of cake compared to the mock test."
To study seriously. "I need to hit the books before my IELTS test next week."
Over an extended period of time. "Learning German now will pay off in the long run."
To consider advantages and disadvantages. "I need to weigh the pros and cons before choosing a university."
To do something difficult that can't be avoided. "I finally bit the bullet and booked my PTE test."
Very rarely. "She only misses class once in a blue moon."
Use two or three idioms naturally in a five-minute conversation — more than that starts to sound rehearsed rather than fluent.
Don't memorise idioms in isolation — learn them inside a full sentence you're likely to say yourself. In Spoken English classes, we practise idioms in real conversation so they become natural instead of textbook phrases.
