She didn’t understand the benefits of volunteering until she joined this club.
A. Not until she joined this club did she understand the benefits of volunteering.
B. It was not until she joined this club did she understand the benefits of volunteering.
C. Not until did she join this club, she understood the benefits of volunteering.
D. Not until she joined this club that she understood the benefits of volunteering.
Kiến th ức: Cấu trúc “...not...until..”
Giải thích:
It is/ was not until + clause/ adv of time + that... + S + V = Not until + clause/ adv of time + auxiliary + S + V : Mãi cho đến khi...thì...
Tạm dị ch: Cho đến khi cô tham gia câu lạc bộ này, cô mới hiểu được những lợi ích của hoạt động tình nguyện.
A. Cho đến khi cô ấy tham gia câu lạc bộ này thì cô ấy mới hiểu những lợi ích của hoạt động tình nguyện. => đúng
B. sai ngữ pháp: did she understand => she understood
C. sai ngữ pháp: sửa lại giống câu A
D. sai ngữ pháp: Không dùng “that”
Ch ọn A
She raised her hand high so that she could attract her teacher's attention.