常见从句之宾语从句

从句中同样五脏俱全，引导从句的单词（引导词）可以充当从句中主语，宾语，定语，状语

一、宾语从句引导词

（宾语从句，整个句子在主句中是宾语，找分界点：主句中的谓语动词。下面例子中我用波浪线给大家把主句中的谓语标出来了，帮助咱们识别。）

1、that 引导

1）一般可省略

2）不可省略。

①谓语+其他成分+宾语从句时

如：I told him in my letter that I might not attend his party.(因为told 和that I might not attend his party之间有in my letter.所以that不可以省略，其中him是间接宾语)

②宾语从句中主语是that/this时

如:She said that this is very special.

③谓语动词是agree,suggest,learn,intend,admit,feel,claim,hold等

如：I learned that she would come to Beijjing.

2、whether和if引导

1）可互换

2）不可互换。

只用whether 情况如下：

＆与or not连用时。 Please tell me whether Mike can come or not.（其中me是间接宾语）

＆作介词的宾语时。 He is worried about whether she will be back.

＆宾语从句在句首时。 Whether she is pretty,I am not sure.

3、由连接代词和连接副词引导。

＆连接代词：what/who/whom/whose/which/whatever

I know what I should say.

I know who can do it.

I know whom you are talking with.

I know whose shoe it is.

I know which I can take.

＆连接副词：where/why/how/whenever/when

I know why I like you.

I know how I can do it.

I know where I can find her.

I know when she will com.

二、宾语从句时态

1、主句：一般现在时，宾语从句：自由放纵

2、主句：一般过去时，宾语从句：谓语常用过去时

＆宾语从句是客观真理或自然现象，从句谓语动词用一般现在时。