Hello – bonjour
(Pronounced bohn-zhoor – the "n" is barely sounded)
To remember that Hello is pronounced bohn-zhoor (bonjour) in French, use the following mnemonic:
The criminal was odd. She waved and said "hello" to everyone while wearing a big bonnet and the jury (bonjour) just stared at her.

Examples of bonjour (hello) in a sentence
Bonjour tout le monde.
(Hello everyone.)
Bonjour, je voudrais un croissant, s'il vous plaît.
(Hello, I would like a croissant, please.)
Passe le bonjour à tes parents de ma part.
(Say hello to your parents for me.)