Could he buy the car?为什么用could呢?跟时态有关还是跟语气的委婉有关?和Can he buy the car?的意思是不是不一样?

Could he buy the car?为什么用could呢?跟时态有关还是跟语气的委婉有关?和Can he buy the car?的意思是不是不一样? The old man said that he ____(supose) I could afford to buy a car. why could he buy the car?有道翻译是：为什么他能买这车?既然他能买这车,could应该在he的后面,帮分析, The man was rich.He could afford a new car.(同义句） The man was ____ ___ ____ buy a new car. when did he buy the car 和when he bought the car 怎么区别在哪 could he buy the car?yes,he could.It was cheap enough for him to buy.就是这句话里为什么要用was,不用iscould he buy the car?这句话是问他有没有可能能买得起那辆车,can表可能性时,是不分时间的 So expensive _____that none of us could afford to buy it .A .have the car been B.the car was C.the car being D.was the car He said ______he could afford the carHe said ______he could afford the car. He wants to buy the model car but he has no money.(改为同义句）He wants to buy the model car but heHe wants to buy the model car but he _ _ _ money He has enough money to buy the expensive car.同义句转化.He has enough money to buy the expensive car.同义句转化为He is ------- --------（两个空）to buy the expensive car. he has no money to buy the car that he likes very much同义句转换 can he buy the car?he is as poor as( can） be.为什么用can If he doesn't help me, I won't buy the car.If he doesn't help me, I won't buy the car.改为简单句:I won't buy the car ______ ______ help. He want to buy a new car He decides ________(buy)a new car If he doesn't help me,I won't buy the car.(改成简单句） I won't buy the car ___ ____ help. The man is so rich that he can buy a car.改为同义句 连词：as ,has ,Mike ,the ,won't ,no,buy ,car ,he ,money,