there be 的谓语动词be是就近原则,比如there is a photo and some apples,用is不用are
第一句there is some bread这里bread是不可数,所以谓语是is
第二句there are two pieces of bread,这里是two pieces不是bread是are
供参考
there is some bread on the table桌子上有些面包
there are two pieces of bread on the table 桌子上有两块面包
There are two pieces of bread on the table
1.There are some braeds on the table.
2.There are two pieces of braed on the table