问题描述：
1.Could you tell me___who you are waiting for____?
为什么“who you are waiting for”主语不是过去时吗?为什么是“you are ”而不是you were
2.I really don't knowif she ____will find____it when she _arives______我不太明白“arives”为什么不是will arive?
为什么“who you are waiting for”主语不是过去时吗?为什么是“you are ”而不是you were
2.I really don't knowif she ____will find____it when she _arives______我不太明白“arives”为什么不是will arive?
问题解答：
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