How many pieces of bread are there on the plate?为什么用how many

How many pieces of bread are there on the plate?为什么用how many how many beef is there on the plate怎么改错 How many beef is there on the plate 改错How many cakes are there on the plate just now there are two pieces of bread on the plate 此句子改成单数形式 英文语法There ____five pieces of bread on the plate.A is B are C how many glasses of water are there on the table? How many stars are there on the fiag of USA? How many pieces of bread are they in your box这个句子对吗 There are therephotos on the wall.用how many提问 别人跟你说How many knives and forks are there on the plate你会怎样回答? How many trees are there on top of the mountain?这里的on top of