Idioms about Knowledge and Ability

This is lesson 14 from Idiom Part 3. Each idiom is followed by its definition and examples. After you learn them, you can use them in your daily conversation.

 

Previous English Idiom Lesson

In our previous English idiom lesson, we cover below:

Idioms Related To Holidays

 

English Idiom Part 3- Lesson 14

1. It’s common knowledge = Something that is generally known by many people.

It’s common knowledge that smoking is harmful to your health.

 

2. To the best of my knowledge = As far as I know; based on the information I have.

To the best of my knowledge, she hasn’t submitted the report yet.

 

3. The world is your oyster = You have the freedom and ability to achieve whatever you want in life.

Now that you’ve graduated from university, the world is your oyster.

 

4. That’s the first I’ve heard of it = I had no prior knowledge of that; it’s new information to me.

When they said the event was canceled, I said, “That’s the first I’ve heard of it.”

 

5. It’s second nature = Something you do very easily or naturally, often because you’ve done it many times.

Driving a manual car is second nature to me now.

 

6. I don’t know the first thing about them = I have absolutely no knowledge or understanding about them.

I don’t know the first thing about them, so I wouldn’t be much help.

 

7. I know it like the back of my hand = I’m extremely familiar with it.

I’ve lived in this town my whole life, I know it like the back of my hand.

 

8. Can I pick your brains? = May I ask you for detailed information or advice?

Can I pick your brains about your marketing strategy?

 

9. In the dark = Not knowing about something, especially because others are keeping it secret.

I was completely in the dark about their engagement.

 

10. An old hand = Someone who is very experienced at something.

She’s an old hand at negotiating tough contracts.

 

11. A bit rusty = Not as good as one used to be at something due to lack of practice.

My French is a bit rusty, but I can still hold a conversation.

 

12. A thing or two = Some knowledge or experience about something.

He knows a thing or two about fixing cars.

 

13. Not very well acquainted with = Not very familiar or experienced with something.

I’m not very well acquainted with this software, so it might take me a while to learn.

 

Next English Idiom Lesson

In our next English idiom lesson, we cover below:

Idioms Related To Memory

 

Related Idioms

Here is the list of idioms related to this lesson.

 

Idiom Part 3 Outline

If you wish to explore all lessons that are covered in HiCafe Idiom Part 3, you can visit the Essential and Popular English idioms- Part 3 page.

 

English Fluency Resources

If you like to read all of lessons related to English expressions, phrases, idioms, proverbs, slang and words, you can visit our Improve English Fluency page.