1、宾语从句?,We know him,We know he likes English.,宾语从句就是用一个句子来构成主句的宾语,二、宾语从句三要素,连 接 词,时 态,语 序,连接词(引导词),1.that引导 2.whether/if引 3.疑问词引导连接代词who whom whose what which 连接副词when why where how。,e.g. The teacher says (that) it is going to rain.,一、that引导词 从句是由陈述句转化而来。 可以省略,2. 不可以省略 从句的主语是that时,that不省略。 e.g. The te
2、acher says that that is a girl.,二、whether/if引导词 从句是由一般疑问句转化而来。 Will he arrive on time?The teacher wonders whether he will arrive on time.,1. whether引导的从句常可以与连词or或or not直接连用。The teacher wonders whether its true or not. 2. 当宾语从句提到句首时,只能用whether引导,而不能用ifWhether it is true or not, I cant tell. 3. whethe
3、r可以引导带to的不定式,if则不能。如:The teacher wonders whether to go skiing tomorrow. 4. whether及其引导的成分可放于介词之后,作介词的宾语,但if不能。如:She worried about whether her son could get back home alone.,2. 只用whether ,不用if 的情况。,e.g. The teacher knows why Tom is absent .,三、特殊疑问词 引导词 从句是由特殊疑问句转化而来。,当主句是一般现在时,宾语从句可用任意时态(即:我们可以根据宾语从句
4、的句意来使用需要的任何一种时态。),时态的变化,如果主句用一般过去时,从句要用过去的某种形式,(具体仍取决于从句的意思) e.g. The teacher said (that ) it was going to rain. The teacher wondered whether he would arrive on time.,一般现在时,一般过去时,现在进行时,过去进行时,一般过去时,过去完成时,现在完成时,过去完成时,一般将来时,过去将来时,从句放置在谓语动词为过去式的宾从位置上,根据从句意思应用时态,当宾语从句说明的是如果从句表达的是客观事实、真理、自然现象、名言、警句、格言、谚语等等就不用受到主句时态的限制,仍是用一般现在时态。,