9:45的英文：nine forty-five、a quarter to ten。
a quarter to ten：九点四十五;十点差一刻;差一刻到十点；
quarter：
（图片来自网络侵删）
n.四等份之一;(正点之前或之后的)15分钟，一刻钟;三个月时间;季度;季；
v.把…切成(或分成)四部分;给…提供食宿
相关介绍It's a quarter to ten now.
现在差一刻十点。
It's a quarter to ten. I must finish the quiz quickly.
差一刻十点，我得赶快完成测验。
It's quarter to four now ─ I'll meet you at quarter past.
现在是差一刻四点，我会在四点一刻和你碰面。
It's quarter of four now ─ I'll meet you at quarter after.
现在是三点四十五分，我将在四点十五分和你碰面。
