In answer to Sneha's question: Mp3 audio attached.
In RP, its not usually the done thing to use an 'F' sound as a substitute for the TH sound.
Voiceover Recordings for British Accent Training. Audio information to help students learning the british UK accent. More British Accent help at http://www.learningbritishaccent.com
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In 2009, the BBC released an excellent one-hour special on the topic of language. The program, called Why Do We Talk?, was produced for the BBC’s Horizon series which explores scientific issues and their effects for the future. Below, you’ll find the complete program, featuring the likes of scientist Deb Roy and linguist Noam Chomsky. Enjoy!