he asked Tom whether he had finished his homework这是对的he asked Tom whether he had finished his homework 这是对的那么 he asked Tom if he had finished homework 哪里错了 whether 与if 不是都有是否的意思吗

问题描述:

he asked Tom whether he had finished his homework这是对的
he asked Tom whether he had finished his homework 这是对的
那么 he asked Tom if he had finished homework 哪里错了 whether 与if 不是都有是否的意思吗