第十九讲 句型转换IV.pptVIP

第十九讲 名型转换IV ----肯定句改为否定句 制作人：灵武一中 邱佼贵 2013.12.31 1.把陈述句改为否定句： 当陈述句的谓语动词是①系动词，或②have（当“有”讲）时，或③由情态动词can, may, must加动词原形构成时，或④由助动词have, had加过去分词构成,或⑤由助动词will, shall加动词原形构成时，在把句子变成否定句时要：①把not加在be, have, can等后面；②把肯定句中的不定代词some改为any。 例题1 把下面句子改为否定句： They are doctors.例题2 把下面句子改为否定句： There were some students in the classroom yesterday. 例题3 把下面句子改为否定句： You have some books.例题4 把下面句子改为否定句： He can work out the maths problem by himself. 例题5 把下面句子改为否定句： They will go to see their friends this afternoon.例题6 把下面句子改为否定句： The scientists had done much research when he was forty. 2. 当陈述句中含有something这个词时，把句子改为否定句有两种方法：其一，在句中相应位置加not，再把something改成anything；其二，直接把something改为nothing即可。例题 把下面句子改为否定句： I have something important to tell you. 3. 祈使句变成否定祈使句时在名首加Don’t。例题 把下面句子改为否定句： Play football on the playground. 4. 当陈述句是一个主从复合句，而主句的谓语动词是think时，要把这种句子改为否定句，往往要否定think，而不否定后面从句的谓语动词。例题 把下面句子改为否定句： I think he will be back soon. 5. 某些特殊句型改为否定句时，具有不同的方法：①在陈述句中含有had better时，要把not加在better后面，动词原形前。例题 把下面句子改为否定句： You had better go with us. ②陈述句中含有both (of)+名词作主语，改为否定句时则用neither代替both，并且要注意谓语动词数的变化。例题 把下面句子改为否定句： Both of them are Americans. ③把两个否定的简单句用neither…nor连成一句。例题1 连成一句：Martin didn’t go there. Smith didn’t go there, either.例题2 连成一句：I don’t see that film. He doesn’t see it ,either. 练 习I. 把下列句子改成否定句：1. She went to bed after she finished writing.2. I can go to the cinema with you this evening.3. He knows where to go. 4. You have read something interesting recently.5. The old man is blind in both eyes.6. The farmers saw something like a cloud coming towards them.7. Look up the word in the dictionary. 8. There will be an English Evening next Saturday.9. He had better play the violin now.10. They have been good friends since they came here. 11. We had learn