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宾语从句时态的三大原则
宾语从句的变化主要是时态的变化，引导词的变化，人称的变化。
当主句为过去时态时，从句必须用过去时态，当然客观真理除外。
I said(that) I would buy this coat for you
teacher said (that)the erath moves around sun
人称的变化有如下的口诀，实际上就是直接引语变间接引语的注意事项。一随主、二随宾、第三人称不更新。引导词的变化也与直接引语便，间接引语的引导词，注意事项相同，特殊疑问句用疑问词引导。
1、动作/行为/事情发生时间上的逻辑关系，即时序上说得通；
2、动作/行为和句子主语（主句和从句主语）的逻辑关系，即语序上说得通。
扩展资料：
宾语从句
宾语从句的连接词：that
结构：主语+谓语+宾语（陈述语序）
动宾从句
1、大多数及物动词都可以带宾语从句。
2、部分“动词+副词”结构也可以带宾语从句。
3、动词短语也可以带宾语从句，常见的这些词有：
make sure（确保）、make up one’s mind（下决心）、keep in mind（牢记）
4、可运用形式宾语it代替的宾语从句
①动词find,feel,consider,make,believe,think等后面有宾语补足语的时候，则需要用it做形式宾语而将that宾语从句后置。
②有些动词带宾语从句时需要在宾语从句前加it（双宾语）这类动词主要有：hate、take、owe、have、see 、to、award、lend、hand、mail、offer、pass、pay。
参考资料来源：百度百科——宾语从句
宾语从句是主句用什么时态从句就用什么时态么 例如主句用过去完成时从句用什么时态
（1）当主句的谓语动词是一般现在时时，其宾语从句的时态可以是任何适当的时态。所以，宾语从句的时态应根据实际情况而定。eg.
She says (that) she works from Monday to Friday. 她说她从周一至周五上班。
（从句是一般现在时）
She says (that) she will leave a message on his desk. 她说她要在他桌子上留个便条。
（从句是一般将来时）
She says (that) she has never been to Mount Emei. 她说她从来没有去过峨嵋山。
（从句是现在完成时）
（2）当主句的谓语动词的时态是一般过去时的时候，其宾语从句的时态一般要用任一适当的过去时态。eg.
He said there were no classes yesterday afternoon. 他说昨天下午没有课。
从句是一般过去时）
He said (that) he was going to take care of the baby. 他说他会去照看这个婴儿。
（从句是过去将来时）
He said (that) they were having a meeting at that time. 他说他们那时正在开会。
（从句是过去进行时）
但是当宾语从句是表达客观真理和规律的句子时，其时态仍旧用一般现在时。eg.
The teacher told us(that) nothing is difficult if we put our hearts into it.
老师告诉我们世上无难事,只怕有心人。
She said(that) her father is twenty-eight years older than her.
她说她父亲比她大二十八岁。
He said that light travels much faster than sound.
他说光比声音传播得快。
He told me that I must go to school on time every day.
他告诉我我必须每天按时上学。
主句用过去完成时，从句根据实际语境用任何一种过去时态
宾语从句的时态
1）当主句的谓语动词是一般现在时时，其宾语从句的时态可以是任何适当的时态。所以，宾语从句的时态应根据实际情况而定。eg.
She says (that) she works from Monday to Friday. 她说她从周一至周五上班。 （从句是一般现在时） She says (that) she will leave a message on his desk. 她说她要在他桌子上留个便条。 （从句是一般将来时） She says (that) she has never been to Mount Emei. 她说她从来没有去过峨嵋山。 （从句是现在完成时）2）当主句的谓语动词的时态是一般过去时的时候，其宾语从句的时态一般要用任一适当的过去时态。eg.He said there were no classes yesterday afternoon. 他说昨天下午没有课。从句是一般过去时） He said (that) he was going to take care of the baby. 他说他会去照看这个婴儿。 （从句是过去将来时） He said (that) they were having a meeting at that time. 他说他们那时正在开会。 （从句是过去进行时） 但是当宾语从句是表达客观真理和规律的句子时，其时态仍旧用一般现在时。eg. The teacher told us(that) nothing is difficult if we put our hearts into it. 老师告诉我们世上无难事,只怕有心人。 She said(that) her father is twenty-eight years older than her. 她说她父亲比她大二十八岁。 He said that light travels much faster than sound. 他说光比声音传播得快。 He told me that I must go to school on time every day. 他告诉我我必须每天按时上学。注意：当主句的谓语动词是think或believe，宾语从句要表达否定时，要把从句的否定转移到主句上。 eg. 我认为他不会帮你学英语的。 I don't think he is going to help you with your English.不可以翻译成： I think he isn't going to help you with your English. 如果宾语从句有它的补语时，宾语从句用it代替，从句后置。其句型为：主语+谓语 + it +补语+宾语从句。 eg. I think it necessary that we learn English grammar. 我认为我们学习英语语法是必要的。 He thinks it a good job that he becomes a teacher. 他认为当老师是个很好的职业。 实战演练1. Could you tell me if it _____ tomorrow? A. rains B. is raining C. will rain D. rain2. The teacher told his students the sun_____ in the east. A. rise B. rises C. rose D. risen3. I'm sure___ he will be here on time. A. if B. that C. whether D. when4. Can you tell me ______? A. what's the matter with him B. what the matter with him is C. what happened with him D. what with him happened5. Let me tell you ______. A. how much is the car B. how much does the car cost C. how much did I pay for the car D. how much I spent on the car6. Peter knew _______. A. whether he has finished reading the book B. why the boy had so many questions C. there were 12 months in a year D. when they will leave for Paris7. Bruce says _______ he can come at 9:00 tomorrow. A. when B. what C. that D. what time8. Dave, could you teach me ______ to search the Internet? A. that B. how C. when D. why9. Could you tell me ______? A. where is the nearest railway station B. where the nearest railway station was C. where the nearest railway station is D. where was the nearest railway station10. He was afraid ______ he would forget his Chinese. A. if B. when C. how D. that1-5 C B B A D 6-10BCBCD
宾语从句时态一致原则的微课
主句是一般现在时从句根据句子可以用不同的时态。
主句是一般过去时，从句要用相应的过去时态，除了客观真理外。
He says that he will go to Beijing.
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