句型轉換。
1. The children are playing in the park. (單數(shù)句型)
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2. The birds are singing in the trees. (一般疑問句)
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3. I will go to the park. (用be going to句型改寫)
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4. The girls are going to have a picnic in the park. (對劃線部分提問)
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5. We're going to go to school at eight o'clock. (對劃線部分提問)
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6. These dogs are very noisy. (否定句)
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