He was a most peculiar – looking ma

He was a most peculiar – looking man. = very peculiar-looking ( ใช้ a กับนามเอกพจน์ นับได้ )
It was most expensive wine. = extremely expensive ( ไม่มี article กับนามนับไม่ได้ )

ผลลัพธ์ (อังกฤษ) 1:

He was a most peculiar – a man looking very peculiar-looking. = (used with a singular countable.) It was most expensive wine. = extremely expensive (no article with the noun does not count).

ผลลัพธ์ (อังกฤษ) 3:

He was a most peculiar - looking man. = very peculiar-looking (used a with singular nouns, count).It was most expensive wine. = extremely expensive (no article with one way ticket).