As for books, I recommend the English Pronunciation in Use series. This is also British English and, importantly, includes CDs. To get subtitles in English this is also called 'closed captions' , start the programme, then click on the 'S' at the bottom of the screen. It's important to pay attention to the intonation of the whole sentence as well as the sounds of the words.
This article explores recent grammatical change in the English perfect construction, with special focus on the infinitival perfect. Previous studies have typically drawn on written data, whereas this study reports on spoken data drawn from the Diachronic Corpus of Present-Day Spoken English, based at the Survey of English Usage, University College London. This is a parsed corpus of British English which includes a wide range of spoken genres and spans the period from the s to the s. First, the article compares the main inflectional subtypes of the perfect present, past and infinitival in terms of changing frequencies of use. Significant declines in frequency measured per million words are reported for the past perfect and infinitival perfect, while the present perfect appears stable. Next, the article focuses on the behaviour of the infinitival perfect in different grammatical contexts, showing that its decline within the context of a preceding modal auxiliary is independent of the declining frequency of modal auxiliaries themselves. The study shows the importance of considering changes in a linguistic category like the perfect in relation to its interaction with other categories such as morphological tense and modality.
The football match begins at 7. So during this time, for example at 8. Another example:. This time next week I'll be lying on a beach or swimming in the sea.