Compare: ai Hot though (or as) the night air was, they slept soundly. and ai Although/Though the night air was hot, they slept soundly. ... We can use while or whereas (or less often whilst) to say that something contrasts with something in the main clause. ... subordinate clause makes what is said in the main clause unexpected: ai Although/While Sophiea#39;s father is from Spain, she doesna#39;t speak Spanish.
|Title||:||Advanced Grammar in Use. Without Answers|
|Publisher||:||Ernst Klett Sprachen - 2006-12|