1. He is younger than any other boy in the class.
He is younger than the other boys in the class.
2. It took many people many years to build the Great Wall 2000 years ago.解释给我下OK？求求求！！！！！！1. He is the youngest boy in the class. 他是班上最小的男孩。He is younger than any other boy in the class. 他比班上任何别的男孩都小。He is younger than the other boys in the class. 他比班上其他的男生都小。2. Many people spent many years building the Great Wall 2000years ago.2000年前，许多人花费了许多年来建造长城。It took many people many years to build the Great Wall 2000 years ago. 2000年前，建造长城花费了人们许多时间。这是从意思上的解释，这样明白么？