forty 
สี่สิบ ☊ seeL sipL 
forty (40) 
quarante ☊ 
四十 
vierzig 
forty-four ☊ 
Bốn mươi tư ☊ Numbers Nine thousand three hundred forty-five ☊ Chín nghìn ba trăm bốn mươi lăm ☊ Numbers like: forty → →
at forty one has no more perplexities ☊ tứ thập bất hoặc ☊ about forty years old ☊ độ tứ tuần ☊ 653
It cost forty dollars ($40). > It cost thirty euros (€30) ☊ Giá bốn mươi dollar. ☊ 687
At eight forty- ve (8:45) she was washing her car. ☊ Lúc tám giờ bốn mươi lăm cô ấy đang rửa xe, ☊ 688
At ten forty- ve (10:45) she was playing tennis. ☊ Lúc mười giờ bốn mươi lăm cô ấy đang chơi quần vợt. ☊ 2765
It's a two-hour drive to the airport BY car, but it's only forty (40) minutes by high-speed rail. ☊ Lái xe đến sân bay bằng xe hơi mất hai tiếng nhưng đi bằng đường sắt cao tốc thì chỉ mất bốn mươi phút. ☊ We've still got another (= a further) forty miles to go. ☊ another ☊
I make it ten pounds forty-three you owe me. Let's call it ten pounds. ☊ call ☊
You can't live on forty pounds a week. ☊ live on sth ☊
Make it a round figure—say forty dollars. ☊ round ☊
She's nearly forty now. And it shows (= it's obvious). ☊ show ☊
a new comedy aimed at thirty-somethings (= people between thirty and forty years old) ☊ something ☊
My car does forty miles to the gallon. ☊ the ☊
quarante ☊ j’ai quarante ans, elle en a vingt-cinq! ☊
quarantaine ☊ une quarantaine de filles nous attendaient à la sortie ☊