Pronunciation as of English alphabet B same pronunciation is in Marathi as बी = In Marathi बी means seed (of any plant; for singular usage only, plural is different we will not get in to plural at this stage)
Note pronunciation of English word "Bee" is also similar.
Remember pronunciation बी is not necessarily as of other words starting with B
Remember pronunciation बी consonant ब् as in 'Bucket'; so just ब् is without vowel. To make sound as in English word Bee vowel sound ई 's is added to consonant ब् with ी sign. Hence, ब् + ी = बी
We learned:
Consonant ब्
Series of this consonant : प्, फ्, ब्, भ् , म्
and vowel sign to go with consonants ी for vowel ई ; In English many spellings with ee like Bee, See, Pee contain longer sound like ई ( ी) also few English words with single e like 'me' have longer ई ( ी) vowel sound. (Sounds formed with English i vowel are usually shorter like 'big', 'pig' are shown in Marathi with different vowel इ ( ि) ; To make the difference more clearer; English word 'keen' contains longer vowel pronunciation as of ई ( ी) and word 'kin' has shorter pronunciation as of इ ( ि) )
Vowels in Marathi language अ, आ, इ, ई = ी , उ, ऊ, ए, ऐ, ओ, औ, ऋ,ॠ, ऌ,ॡ, ॲ, ऑ