8.15用英語(yǔ)：fifteen past eight；
eight
num. 八；八個(gè)；第八；八歲；八點(diǎn)
adj. 八的
n. 八人劃船隊(duì)
例句：
Eight oclock had already chimed.
已敲過八點(diǎn)鐘了。
Twenty-eight is divisible by seven.
二十八可以被七整除。