复习英语专八语法的时候，同学们常会遇见把含有宾语从句的复合句转化为简单句，使其与原句意思相同的考试试题。下面是我们给大伙推荐的专八语法常识，大伙可以作为学习的参考。
办法1、当主句谓语动词是hope， decide， wish， choose， agree， promise等，且宾语从句的主语与主句主语一致时，宾语从句可简化为不定式结构。比如：
Li Ming hopes he will be back very soon. →Li Ming hopes to be back very soon.
We decided that we would help him. →We decided to help him.
办法2、当主句谓语动词是know， learn， remember， forget， tell等动词，且主句主语与从句主语一致时，宾语从句可简化为“疑问词+不定式”结构。比如：
She has forgotten how she can open the window. →She has forgotten how to open the window.
注：当主句谓语动词是tell， ask， show， teach等动词，且后带双宾语，从句主语和间接宾语一致时，宾语从句可简化为“疑问词+不定式”结构。比如：
Could you tell me how I can get to the station? →Could you tell me how to get to the station?
办法3、当主句的谓语动词是order，require等时，假如主句和从句的主语不同，宾语从句可简化为“名词+不定式”结构。比如：
The headmaster ordered that we should start at once. → The headmaster ordered us to start at once.
办法4、某些动词后的宾语从句，可以用介词加动名词等其他形式简化。比如：
He insisted that he should go with us. →He insisted on going with us.
The poor boy doesn't know when and where he was born. →The poor boy doesn't know the time and the place of his birth.
办法5、某些动词后面的宾语从句可转化为“宾语+V-ing形式”结构。比如：
Liu Ping found that there was a wallet lying on the ground. → Liu Ping found a wallet lying on the ground.
办法6、动词seem后的宾语从句，也可以用不定式来简化，但句型需要进行适合的变化。比如：
It seemed that the boys were going to win. →The boys seemed to win.
除上述办法外，还有一些特殊句式的转化。比如：
I found that it was difficult to learn English well. →I found it difficult to learn English well.
Soon we found that the ground was covered with thick snow. →Soon we found the ground covered with thick snow.
They found that the box was very heavy. →They found the box very heavy.
以上就是英语专八语法常识的整理，期望可以给大伙学习带来帮助。
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