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
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