Most of us learnt that ‘a’ goes before consonants and ‘an’ before vowels – and most of us were only half-right. This Learning with TOI English Hack explains the real rule: it is not about letters, but ...

"Ths sntnc s mssng ts vwls." You likely figured out the words — "this sentence is missing its vowels" — even though they're lacking several letters of the alphabet. But how can you understand words ...