effort可数吗?

effort可数吗? message,effort是可数名词吗 effort什么时候可数 什么时候不用? effort可数不可数：my long-term effort 还是 efforts? make efforts to do sth.为什么effort要加s,它是可数名词吗? 为什么【effort努力】是可数名词? effort是可数名词还是不可数名词? His explanation was so clear that everyone could understand it with the least possible effort．为什么要填least,effort做努力时不是可数的吗? effort的用法My father puts a lot of effort into his work.If yo want to succeed ,you must make efforts.这样两个句子都对吗?effort是可数名词也是不可数名词吗? effort作啥解释是可数啥解释是不可数? effort spare no effort effort要加s吗 有give no effort这个词吗? make every effort 和spare no effort意思一样吗?还有哪些差不多的短语? secret可数吗?secret秘密可数吗? News 可数吗News可数吗 tear可数吗?newspaper可数吗? feather 可数吗feather是不是可数名词~