6:45的英文有：第一种six forty-five 第二种a quarter to seven；
forty：n. 四十; 四十几。
quarter：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;
相关介绍
Excuse me, may I have the time? It's a quarter to seven.
对不起，请问现在几点？七点差一刻。
I was excited. I got up at a quarter to seven.
我很兴奋。我在六点四十五分时起了床。
They often have their evening meal at about a quarter to seven.
他们常在七点四十五吃晚餐。
At a guess, there were forty people at the party.
估计有四十人参加了聚会。
After forty years in politics I think it's time for me to call it a day.
从政四十年，我想现在也该退休了。
I'll feel much better when I've had forty winks.
我打个盹就会感到好得多。
