题目内容
【题目】I think bicycles are much safer than other vehicles. （改为否定句）
I think bicycles much safer than other vehicles.
【答案】don't；are
【解析】句意：我认为骑自行车比其他车辆要安全的多。think跟宾语从句时要用否定前移的形式，即主句用否定，从句用肯定。所以答案是don't； are。
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题目内容
【题目】I think bicycles are much safer than other vehicles. （改为否定句）
I think bicycles much safer than other vehicles.
【答案】don't；are
【解析】句意：我认为骑自行车比其他车辆要安全的多。think跟宾语从句时要用否定前移的形式，即主句用否定，从句用肯定。所以答案是don't； are。