1. 三块多钱：more than tree dollars; three dollars and more;three dollars and so;over three dollars, three and more dollars 2. 300多人依照上面类推。3. 三点多钟则不能，因为三块多和三百多后量词都是可数名册，而o'clock是不可数的，只能讲over three o'clock或者three o'clock later (或after),前者也就是过了整三点，还不到四点，而后者则是三点以后。...
表数量时可选用more than 或 over比如more than 3 yuan 或者over 300 people 或more than 300 people表时间时，多用after， 比如after 3 o'clock但英语里这一说法也不多，比较常用“at around 3 o'clock”...
