a lot of chocolate加s吗

为什么a lot of chocolates的chocolate要加s A box of chocolate 可不可加s a bar of chocolate里面的bar能加s吗 a lot of questions是不是question加S.为什么 There is a lot of s后面加什么 a lot of Japanese复数为什么不加S a lot of,lot's of 和a lot a bar of chocolate a lot of fruit为什么不加s many fruits却加s 为什么a lot of fruit fruit不加s而many fruits 加s a large number of和a lot of后面加的名词都要加s么 Did they have a lot of chocolate the weekend nefore last?(作否