八年级下册英语第四单元知识点总结重点语法：宾语从句 结构：主语 + 谓语动词 + 宾语从句（主语 + 谓语动词 + 宾语/表语） 例句：-“Im good at English.” He says. （改为加宾语从句的复合句） -He says Im good at English. 注意：主句是一般现在时态，宾语从句的时态不受其影响。 例句：He says “Im good at English now.” He says I was good at mathematics when I was young. 主句是过去时态，宾语从句也要用过去时态。 例句：He said I was good at mathematics when I was young yesterday. He said I was good at English now yesterday. 宾语从句是客观真理时永远用一般现在时态。 例句：Our teacher says 24 hours make a day.
