句型转换。
1. I know he is a good student. (否定句)
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2. He likes the flowers too. (否定句)
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3. She is telling us an interesting story. (祈使句)
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4. I can think of a story with a tortoise and a hare. (一般疑问句)
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5. We win the race. (用now改写)
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1. I don't know he is a good student.
2. He doesn't like the flowers either.
3. Tell us an interesting story.
4. Can you think of a story with a tortoise and a hare?
5. We are winning the race now.