質問者様のお求めの英語は「Speak to many foreigners in English」になります。
ただ、これだけでは文脈がないため、意味がありません。
前後を入れることで、「context」（文脈・背景）が明確になります。
例文：
- In Shibuya there are some strange people that try to speak to many foreigners in English, for some reason. It's a kind of harassment.
= The reason I would like to speak to many foreigners in English is because it feels strange to speak to Japanese people in English.
イギリス 
日本 
