他给了我书面保证的英文

he gave me assurance in black and white

• 他:    he
• 给:    supply; provide
• 了:    finish; complete; ...
• 我:    I; my; me
• 书面:    written; in writte ...
• 保证:    pledge; guarantee; ...

例句与用法

1. He gave me assurance in black and white .
   他给了我书面保证。