can he buy the car?he is as poor as( can） be.为什么用can

can he buy the car?he is as poor as( can） be.为什么用can 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 man is so rich that he can buy a car.改为同义句 为什么是“Can you tell me when he bought the car而不是Can you tell me when did he buy the car He can't afford to buy a car when did he buy the car 和when he bought the car 怎么区别在哪 I can't afford ________ (buy) the new car The car is expensive.I can't buy the car.讲这句子变成一个句子.I can't buy the car _______ it is too expensive. He can't buy this car.He doesn't have so much money.so________________________________________________________________ The car is expensive he can't buy it.A.too,To B.so,that C.such that D.enough,that 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 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 John wants a car and he can't buy one.哪错了 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. 填空 Finish the sentences with because or soit's dangerous. I Can't buy a car his car broke downI'll join the English club he tooka taxi . Ididn't sleep well last night 1:John was late ______________________________________ he has no money to buy the car that he likes very much同义句转换 He can put the bag in the car改为一般疑问句. _____he_____the bag in the car? I can tell （ ）experience that something is wrong with the machinehe didn't buy a new car 和he didn't bought a new car 那句对 /最好是解释下原因,