can't的过去式是couldn't.
如He can't dance. 他不会游泳。
而couldn't要用于过去式的句子中,如:
She couldn't ride a horse when she was
only 3 years old.在她三岁的时候她还不会骑马。
can't的过去式是couldn't.
如He can't dance. 他不会游泳。
而couldn't要用于过去式的句子中,如:
She couldn't ride a horse when she was
only 3 years old.在她三岁的时候她还不会骑马。