有关英语语法的问题

1. A prosperity which *had* never been seen before *appears* in the countryside.
分析

主句 A prosperity *appears* in the countryside. 这个农村展现繁荣。
子句 The prosperity *had* never been seen before. 这繁荣史无前例。

注意原句有误： appears与 had需要一致是现在时， 或过去时。按题意， 应把had改成has.

A prosperity which *has* never been seen before *appears* in the countryside.

2. The package which you are carrying is about to come unwrapped.

分析
主句 The package is about to come unwrapped.
这包裹没有包装快送来。
子句 You are carrying the package.你携带著那个包裹。

1, 主句：A prosperity appears in the countryside
主语：A prosperity
谓语：appears
状语：in the countryside