long time可加s吗?

long time可加s吗? a long time 和 for a long time有区别吗?什么时候该加for,什么时候可加可不加呢? 【改错】ten minutes is long long time.minutes应不应该加S A long time ago 与 Long time agoLong time ago前必须加a吗?在句子中只用long time ago,不加a,符合语法吗? we have been best friends for a long time中friends为什么要加s We have been good friends a long time.这里的a long time之前不用加for吗?为什么? time为什么加s? It's a long time since …… 后加什么时态 是固定的吗 还是看情况这是固定句型吗? it's a long time什么意思 It's raining for a long time? time like money { like加S吗 }改为time is like money { like加S吗 } long long time ago是病句吗 改错It didn’t take long before new troubles arose是在long后加time吗? 下面两句英语表达的意思一样吗It's been a long time not to see youit's long time to haven't see you it's a long time 和 it's long time 的区别 British英国人时可加s吗 spend some time, time 能不能加S Here is a card. Please ------it out. 填单词, I watch TV for long time. 为什么不能在time后加s?