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【方法一】
当主句谓语动词是hope， decide， wish， choose， agree， promise 等，后接宾语从句，且从句与主句主语一致时，从句可简化为不定式结构。如：
Su Feng hopes he will be back very soon.
→ Su Feng hopes to be back very soon. 苏锋希望能很快回来。
We decided that we would help him.
→ We decided to help him. 我们决定帮助他。
【方法二】
当主句谓语动词是know， learn， remember， forget， tell 等动词时，且主句与从句主语一致时，宾语从句可转化为“疑问词+不定式”的结构。如：
She has forgotten how she opened the window.
→ She has forgotten how to open the window. 她已经忘记怎样打开那扇窗户了。
当主句谓语动词是tell， ask， show， teach 等动词时，且后带双宾语，间接宾语和从句主语一致时，宾语从句可简化为“疑问词+不定式”的结构。如：
Could you tell me how I can get to the station？
→ Could you tell me how to get to the station？ 你能告訴我到车站的路吗？
但是，如果间接宾语与从句主语不一致，一般不要把宾语从句简化，否则会产生歧义。如：
He didn’t tell me where he would go.
→ He didn’t tell me where to go.
简化的句子含义可能有以下两种：“他没有告诉我他要去什么地方”或“他没有告诉我我要去什么地方”。
【方法三】
当主句谓语动词是order（命令），require（需要）等时，如果主句和从句主语不一样，宾语从句可转化为“名词（代词）+不定式”的结构。如：
The headmaster ordered that we should start at once.
→ The headmaster ordered us to start at once. 校长命令我们立即出发。
【方法四】
在某些动词后的宾语从句，可以用介词加动名词（短语）等其他形式简化。如：
He insisted that he should go with us.
→ He insisted on going with us. 他坚决认为应该和我们一起去。
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.
这个可怜的孩子不知道他出生于何时何地。
【方法五】
某些动词后的宾语从句可转化为“宾语+v.-ing形式（作宾语补足语）”。如：
Liu Ping found that there was a wallet lying on the ground.
→ Liu Ping found a wallet lying on the ground. 刘萍发现地上有个钱包。
【方法六】
某些动词后的宾语从句，也可以用不定式（短语）来简化，但句型需要进行适当的变化。如：
It seemed that the boys were going to win.
→ The boys seemed to win. 男孩子们看起来要获胜了。
除上述方法外，还有一些特殊句式的转化。如：
I found that it was difficult to learn English well.
→ I found it difficult to learn English well. 我发现学好英语很困难。
We found that the ground was covered with thick snow.
→ We found the ground covered with thick snow. 我们发现地面被厚厚的雪覆盖了。
【巩固提高】
根据上句完成下句，使两句意思基本相同或相近。
1. I’ll take back what I said.
I’ll take back_______.
2. The teacher found that the boy was very interested in science.
The teacher found the boy _______science.
3. I really don’t know what I should read.
I really don’t know_______.
4. I forget I have closed the window.
I forget_______the window.
当主句谓语动词是hope， decide， wish， choose， agree， promise 等，后接宾语从句，且从句与主句主语一致时，从句可简化为不定式结构。如：
Su Feng hopes he will be back very soon.
→ Su Feng hopes to be back very soon. 苏锋希望能很快回来。
We decided that we would help him.
→ We decided to help him. 我们决定帮助他。
【方法二】
当主句谓语动词是know， learn， remember， forget， tell 等动词时，且主句与从句主语一致时，宾语从句可转化为“疑问词+不定式”的结构。如：
She has forgotten how she opened the window.
→ She has forgotten how to open the window. 她已经忘记怎样打开那扇窗户了。
当主句谓语动词是tell， ask， show， teach 等动词时，且后带双宾语，间接宾语和从句主语一致时，宾语从句可简化为“疑问词+不定式”的结构。如：
Could you tell me how I can get to the station？
→ Could you tell me how to get to the station？ 你能告訴我到车站的路吗？
但是，如果间接宾语与从句主语不一致，一般不要把宾语从句简化，否则会产生歧义。如：
He didn’t tell me where he would go.
→ He didn’t tell me where to go.
简化的句子含义可能有以下两种：“他没有告诉我他要去什么地方”或“他没有告诉我我要去什么地方”。
【方法三】
当主句谓语动词是order（命令），require（需要）等时，如果主句和从句主语不一样，宾语从句可转化为“名词（代词）+不定式”的结构。如：
The headmaster ordered that we should start at once.
→ The headmaster ordered us to start at once. 校长命令我们立即出发。
【方法四】
在某些动词后的宾语从句，可以用介词加动名词（短语）等其他形式简化。如：
He insisted that he should go with us.
→ He insisted on going with us. 他坚决认为应该和我们一起去。
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.
这个可怜的孩子不知道他出生于何时何地。
【方法五】
某些动词后的宾语从句可转化为“宾语+v.-ing形式（作宾语补足语）”。如：
Liu Ping found that there was a wallet lying on the ground.
→ Liu Ping found a wallet lying on the ground. 刘萍发现地上有个钱包。
【方法六】
某些动词后的宾语从句，也可以用不定式（短语）来简化，但句型需要进行适当的变化。如：
It seemed that the boys were going to win.
→ The boys seemed to win. 男孩子们看起来要获胜了。
除上述方法外，还有一些特殊句式的转化。如：
I found that it was difficult to learn English well.
→ I found it difficult to learn English well. 我发现学好英语很困难。
We found that the ground was covered with thick snow.
→ We found the ground covered with thick snow. 我们发现地面被厚厚的雪覆盖了。
【巩固提高】
根据上句完成下句，使两句意思基本相同或相近。
1. I’ll take back what I said.
I’ll take back_______.
2. The teacher found that the boy was very interested in science.
The teacher found the boy _______science.
3. I really don’t know what I should read.
I really don’t know_______.
4. I forget I have closed the window.
I forget_______the window.