Bits of glass were all over the floor.为什么glass是不可数名词还要加were呢?

Bits of glass were all over the floor.为什么glass是不可数名词还要加were呢? bits of 做主语,谓语动词用单数还是负数.比如,bits of water_______in the glass.是单数还是复数 bits of ———water were on the table A.Bits of B.A bit of C.A little D.A bit这个题我在两个书上看到 a glass of orange ( )a glass of beer a glass of 英语翻译 a glass of coke a glass of a glass of 意思 a bit of和bits of的区别RT a bit of和bits of是不是完全一样 a bit of 和bits of 的区别? bits of 和a bit of的区别 Ash and bits of rock were falling onto the ship,darker and more ,_____they went.A closer B the closer 为什么选B Bits indcx out of loose bits of a glass of w什么