Since Gatsy first met Daisy, five years have passed because he has been away at war and then involved in business to make the money he believes he needs to win Daisy's love. Not until he is rich does he arrive at West Egg. In the meantime Daisy has married Tom Buchanan and had a daughter, Pammie. Gatsby also threw huge parties hoping that Daisy would one day stumble across the party. He even bought a house across from hers.
Colloquial speech is the linguistic style for casual communication. Basically informal speech, or speech you’d use while talking to friends or someone your age.
