第一个of是make sth of:以...为材料制成
第二个of是pieces of(a piece of的复数)
它们都是短语中的介词,知道了这些,自然就会断句了。
1.so he made a meal.
2.what kind of this meal it is?
a meal of (two pieces of bread with meat)
so he made a meal of [(two pieces of bread) with meat].
so /he made a meal of/ two pieces of bread /with meat.
two pieces of bread
(two pieces of bread )with meat
a meal of <(two pieces of bread )with meat>
so he made a meal of <(two pieces of bread )with meat>