"j'ai une ..." means "I have a (+ feminine noun)" in English.
"(I) have," "(you) have," and "(he/it/one/she) has" are the respective literal English equivalents of the French words ai, as, and a. The respective pronunciations of the respective first, second, and third persons singular of the present indicative will be "ey," "a," and "a" in French.
Je vous ai informé au sujet de ceci in French means "I have informed you about this" in English.
The phrase "Voc tah ai" is a colloquial way of asking "Are you there?" or "Are you available?" in Brazilian Portuguese. It is often used in informal conversations or when trying to get someone's attention. In English, it can be translated as "Are you there?" or "You there?"
j'en ai un gros / une grosse
"Shi to ai."
"Ai wo kanjirarenai."
Maybe "tenshi no ai"
Nippon ai ni
"Ai" is the form of avoir("to have") used with "je"(equivalent to "I" in english). I have a dog: J'ai un chien.
Ai WA utsukushii desu
"Once Upon a Time I loved you" in French is "Il était une fois, je t'aimais."
"I missed (meeting) you when?" and "You missed me (emotionally) when?" are English equivalents of the French phrase Je vous ai manqué quand? Context makes clear whether missing a meeting or rendezvous (case 1) or regretting a loved one's absence (example 2) suits. The pronunciation will be "zhuh voo-zeh maw-key kaw" in French.