The earth is the planet provides us with everything we need.fresh air.clean water and so on．It's our duty to protect it．( )A．whoB．thatC．where 题目和参考答案——青夏教育精英家教网——

题目内容

9．The earth is the planet _______ provides us with everything we need，fresh air，clean water and so on．It's our duty to protect it．（　　）

A．

who

B．

that

C．

where

分析地球是一颗行星，它提供我们所需要的一切：新鲜的空气、干净的水等．保护地球是我们的义务．

解答答案：B．
首先分析句子结构，本句中的_______ provides us with everything we need在复合句中作定语从句，其中先行词the planet 指物，且在定语从句中做逻辑主语，所以关系代词用that/which，故选B．

点评完成定语从句的关键是分析先行词指人还是指物及其在定语从句中做什么句子成分．

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