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最佳答案：若,事实上是肯定的,就用Yes；若事实上是否定的,就用No来回答.如：He has never been to the Great Wall,has he?他从
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最佳答案：疑问句是Is she from America?否定句是She isn't from America.注意美国的第一个字母要大写.
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最佳答案：Sorry,you can't.
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最佳答案：David doesn't have three nice backpack .Does David have three nice backpack?Yes,
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最佳答案：否定句：The students are not in the room .疑问句：Are the students in the room?肯定回答：Yes,
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最佳答案：Can he play basketball?He can't play basketball.
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最佳答案：Will you let us have some popcorn?Yes,I will.No,I won't.
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最佳答案：反意问句如果前面是否定形式,它的回答中yes是不.no 表示是的 ,如Tom can't speak English ,can he?Yes,he can .(
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最佳答案：Are they student must follow the school rules? No,they aren't.
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最佳答案：Will cities be very big and crowded?Yes,they willNo,they won't