一些量詞的英文（e.g.一罐、一塊etc.）是甚麼？

食物的量詞：
a loaf of bread一條麵包
a box of cereal一盒營養早餐
a slice of cheese一片芝士
a head of lettuce一棵生菜
a piece of cake一件蛋糕
a can of soup一罐湯
a pack of gum一包口香糖
a carton of eggs一盒蛋
a bag/bowl of rice一袋/碗米
a bottle of wine一樽酒
a mug of beer一杯啤酒
a bar of chocolate一塊巧克力
a spoonful of sugar一匙糖
a slice of meat一片肉
a jar of honey一樽蜜糖
同一件物件，亦可以依據容器的不同，而選用不同的量詞。如：
a bottle of water一瓶水
a glass of water一杯水
另外，描寫動物其實亦常要用到特別的量詞：
a flock of birds/sheep
a litter of puppies/kittens/piglets
a pack of dogs/wolves
a school of fish
a pod of dolphins/whales
a swarn if bees/butterflies
a troop of monkeys
a herd of pigs
a colony of ants
其他量詞：
a roll of toilet paper

一罐（罐頭）: a can, a tin
一塊（麵包）: a slice of bread (if cut) or a piece of bread (If torn)
一舊（麵包）: a loaf of bread

For others, please go to the following link:
http://www.ctpc.com.cn/n435777/n435875/n436266/4930.html

漢語量詞與英文用法對照 (Comparison between Chinese Words of Measurement and Their English Equivalents)

一罐（罐頭）= a can of
一塊（麵包）= a piece of bread(只係大/細塊嘅分別)
一舊（麵包）= a loaf of bread
通常都係用piece,1件,1片,1塊,冇中文咁規範.
a piece of clothe=1伴衫