he said he-------- (leave)for America the next month

问题描述:

he said he-------- (leave)for America the next month

left
主句用过去时( said ), 宾语从句也用过去(left)

He said he (would leave) for America the next month.
他说他下个月将要动身去美国.
主句是过去时,所以宾语从句要和主句的时态一致,要用过去将来时.