新人教版英语必修三Unit5 Grammar课时作业含答案
答案与解析：
1．解析：相同词为matter即其为先行词。the matter表物且在句中做主语。关系词为which或that。
答案：We are talking about the matter which/that happened in our company last night.
2．解析：相同词为girl即其为先行词。the girl表人且在后句中做主语。关系词为who或that。
答案：Dan had never seen the girl who/that was standing behind his boss.
3．解析：相同词为the flower＝it即flower为先行词。It (the flower)表物但因先行词被形容词最高级修饰，关系词只能用that。
答案：It is the most beautiful flower that Linda has ever seen.
4．解析：名词doubt后的同位语从句用whether引导；no doubt之后的同位语从句用that引导。
答案：There is no doubt that he will keep his promise.
5．解析：同位语从句中的连词that一般不能省略。
答案：The news that we’ll go on a picnic this Sunday isn’t true.