什么时候宾语从句主句是过去时从句是将来时?有例题

问题描述:

什么时候宾语从句主句是过去时从句是将来时?有例题
Kitty wanted to know_____give us a tale on Chang'e I satellite.
A.where the scientist wouldB.when the scientist will

答案选A,不能用一般将来时,而要用过去将来时.
当主句动作发生的时候,宾语从句的动作还未发生,这时宾语从句的时态一般是过去将来时.
如:She didn't know when she would find her missing pen.