Dog is a good pet for a 7-year-old boy.这句话错在哪里?

Dog is a good pet for a 7-year-old boy.这句话错在哪里? 英语翻译1 .I think a dog is a good pet for a 6-year-old child.2 I think the dog is a good pet for an old man because it is e i think a snake is a good pet for a 16-year-boy 句子结构 I think a dog is a good p____ for a six-year-old child . I think a dog is a good p____ for a six-year-old child. I think a dog is a good p________ for a six-year-old child. 仿照例句写句子：I think the dog is a good pet for an old man because Fox is an eihgt-year-old boy.He is a good boy. he is a 13-year-old boy Is this a dog？No，it is a dog.这句话哪里错了 The old woman ( ) a pet dog ( ) happy last year .kept ,to ke