I often have the chance to speak with people from England and Greece.
I speak to quite a few English and Greek people.
ーI often have the chance to speak with people from England and Greece.
「イギリスとギリシャの人とよく話す機会があります」
often have the chance to speak with ... で「…とよく話す機会がある」
people from England and Greece で「イギリスとギリシャ出身の人たち」
ーI speak to quite a few English and Greek people.
「結構たくさんのイギリス人とギリシャ人と話します」
quite a few で「かなりたくさんの」
ご参考まで！
I have many chances to talk with people from the UK and Greece.
I often speak to people from the UK and Greece.
「イギリスやギリシャの方々と話す機会が多い」は英語で「I have many chances to talk with people from the UK and Greece.」と言います。「I often speak to people from the UK and Greece.」も使えますが、知り合い・同僚の仲で話しているか初めて会った人で話しているかわからないので、どの関係で曖昧です。
イギリスやギリシャの方々と話す機会が多くて毎日新しいことを学べると思います。
I have many chances to talk with people from the UK and Greece, and I learn new things every day.
I often get the chance to talk with people from the UK and Greece.
I often get the chance to talk with people from the UK and Greece.
イギリスとギリシャの方と話す機会が多いです。
get the chance で「機会を得る」を英語で表現することができます。
お役に立てれば嬉しいです。
またいつでも質問してください。
カナダ 
アメリカ合衆国 
