not know the first thing about something
не иметь основных знаний о чём-либо
Пример использования идиомы not know the first thing about something:
Jack wants to buy a car, but I am sure he does not know the first thing about cars.
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Другие идиомы:
- know one's stuff
- know (someone or something) like the back of one's hand
- know the score
- know (something) backwards and forwards
- know one's place
- know where (someone) stands on (something)
- know a trick or two
- know when one is not wanted
- know (something) inside out
- know where all the bodies are buried
- know all the tricks of the trade
- know (someone) by sight
- know (something) by heart
- know which is which
- know which side one's bread is buttered on