Question

Giai thich gium mik cau nay vs

I only recognized him when he came into the room

=> It was not until he came into the room that I recognized him

Answer 1

I only recognized him when he came into the room

=> It was not until he came into the room that I recognized him

^{_{Cấu trúc Not Until}}

Not until …. : Mãi đến khi, cho đến khi

Not until S + auxiliary verb……auxiliary verb + S