Three years later another boundary was discovered that between th_英语解答

Three years later another boundary was discovered that between the mantle and the Earth's crust.
从句中怎么没谓语呢

人气：425 ℃　时间：2020-05-27 21:48:27

解答

People discovered it between the mantle and the Earth's crust.句中的 that between the mantle and the Earth's crust.是主语another boundary的补足语,加上that是为了不让人理解为 was discovered 的地点状语....