Using J' and je

Question

What is the difference between j'ai vingt and and je suis grand considering they are both followed by a consonant that is not h

Jim Jones · Accepted Answer

Bonjour Pamela,
I hope that I understand your query correctly.
Vingt is a noun whereas grand is an adjective.
Je becomes J' before the vowel a of ai whereas je remains as je before s consonant of suis
Bonne continuation
Jim

Muhilan Prathap · Answer

"J'ai" is a fixed form due to the vowel starting the verb "avoir" (ai), whereas "Je suis" keeps "je" because "suis" starts with a consonant. The consonants within the subsequent words ("vingt" and "grand") affect liaisons or pronunciation of their own final letters, but not the "je/j'" part.