Question

帮忙分析一下这是什么从句

The health afficial said 12 suspected cases of influenza A(H1N1) were tested negative and that,so far,this city has reported no case of the virus.

这是什么从句？还有，那个said后面可不可以加that？

Answer 1

这是一个宾语从句。The health afficial作主语 said 作动词 从12到最后是一个大宾语从句。作said的宾语。由于此句是宾语从句 所以动词后面那个that可有可无。但that不是在所有情况下都可以省略。
附：宾语从句中that的使用方法。

从属连词that。如：

He told us that he felt ill. 他对我们说他感到不舒服。

I know he has returned. 我知道他已经回来了。(that省略)

注:宾语从句中that一般情况可省 ,但that在引导宾语从句时也并不是任何情况下都可以省略。在以下情况下，that不能省略。

1． Everybody could see what happened and that Tom was frightened.(and连接两个宾语从句，that宾语从句放在and的后面时，that不能省略。)

大家都会看出所发生的事情并知道Tom非常害怕。

2．I know nothing about him except that he is from the south.(that引导的宾语从句作介词宾语时，that不能省略。)

对他我一无所知，只知道他是南方人。

3．That he ever said such a thing I simply don’t believe. (that从句位于句首时，that不可省略。)

我简直不相信他曾说过这样的话。

4． We decided, in view of his special circumstances, that we would admit him for a probationary period. (主句谓语动词与that从句之间有插入语，that不可省略。)

希望能够帮到您，希望采纳，谢谢。^^

Answer 2

宾语从句 语法习惯,不加that更通顺

Answer 3

就是一个宾语从句，said后可以加that