These cars are brown.说成These are brown cars.语法上存在错误吗?

These cars are brown.说成These are brown cars.语法上存在错误吗? These cars are the ----(play) 是Are they cars还是Are these cars? Are these toy cars 做肯定回答 Are these cars or buses?回答 Are these cars?作肯定回答 These are American cars 改成单数 These cars are built by b_________. What colour are these cars?同意句What's_____ _____ _____ these cars? these are cars(用buses改写成选择疑问句） These are American cars（ 改为特殊疑问句）怎么写? these cars are different_colours A,in B,from选择?为什么? are these cars in the picture?做否定回答 These are cars.(用buses改写成选择疑问句） W c are these cars?G .填什么 whata colour are these cars?改同义句 These are English cars.（改为单数句） These boxes are brown.变单数求了快