i don't know Whether you have received this card,but i still hope you like itWhether 改成if可以吗~我不知道您是否有收到这种卡，但我仍希望你喜欢它

i don't know Whether you have received this card,but i still hope you like itWhether 改成if可以吗~我不知道您是否有收到这种卡，但我仍希望你喜欢它
i don't know Whether you have received this card,but i still hope you like it
Whether 改成if可以吗~
我不知道您是否有收到这种卡，但我仍希望你喜欢它

i don't know Whether you have received this card,but i still hope you like itWhether 改成if可以吗~我不知道您是否有收到这种卡，但我仍希望你喜欢它
可以.
但如果句子后面有not,如：I don't know whether you like the cat or not.这样的话就不能用if了.

不正确的 应该是 l'm sorry you have told him the secret.l wish you对！！ 好像不对. 如果你想说（我很遗憾你告诉他了那个秘密，我多么

可以

可以的