If you practise speaking English, you'll soon improve.
只要你练习说英语，很快就会进步。
In the writer's opinion, foreigners are an "opportunity" to improve your oral English; whenever you see a foreigner, American or English, you should practise speaking English with him or her.
在作者看来，外国人是提高你英语口语的“机会”；每当你见到外国人，不论美国人还是英国人，你应该和他或她练习说英语。
How can I practise speaking English?
我怎样练习讲英语？
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