帮我看看、检查检查些列句子有没有语法错误（英语）

题目

帮我看看、检查检查些列句子有没有语法错误（英语）
The moon is the most thoroughly studied celestial.The moon's age is about 4600000000 years.The moon and the earth as a shell,mantle,core layer structure.The outer shell of the month average thickness of about 60-65 km.Lunar crust below to 1000 km depth is the lunar mantle,it accounts for most of the volume of the moon.

答案

这短文有几个语法错误.我逐句为你改如下： The moon is the most thoroughly studied celestial. 改为The moon is the most thoroughly studied celestial body.The moon's age is about 4600000000 years.改为The m...