宾语从句的应用 

一、引导词

1.that(从句是陈述句时，引导词用that，它本身无词义，不充当成分，在口语中可省略，但在正式场合不可省)。

2.if或whether(从句是一般疑问句时用if或whether，含义是“是否”。)if whether一般情况下可以互换，但在构成whether……or not句式时只能用whether。

3.连接代词，连接代词(what、which、who、whose)连接副词(从句是特殊疑问句时用)，连接副词(when、where、how、why)

二、宾语从句的语序

宾语从句的语序都用陈述句语序(即正常的主谓语序)。例如：

He says that Tom will miss a lot of lessons

She asked whether we should hold a sports meeting

Do you know what the popalation of Dalianis?

三、宾语从句的时态

1.主句是一般现在时，从句可根据需要选用任何时态。例如：

She says that she is good at Chinese.

He Says that he has been ill for three days.

I don’t know if she will come tomorrow.

2.主句是一般过程时，从句可根据需要用相应的过去某种时态。(即一般过去时，过去将来时，过去完成时等)。例如：

She asked me where I lived.

He said that she had been ill for six days.

He said that he would return soon.

3.当从句讲述的是客观事实或真理时，从句时态不受主句的影响，都用一般现在时。例如：

The teacher said “Light travels faster than sound”

She said that the earth is round

特例：Could you tell me ……委婉的语气，常按照一般现在时处理。

Could you tell me where the nearest park is?