大半個小時

大半 daˋ banˋ

(More than half) More than half

半個 banˋ ge˙

(Half, Half of) Half, Half of

半個小時 banˋ ge˙ xiaoˇ shiˊ

(Half an hour) Half an hour

小時 xiaoˇ shiˊ

(Hour, Hours) Hour, Hours