I have heard that a lot of people have been to Russian recently have heard 后面加什么时态

I have heard 后加什么时态

后面句子该用什么时态就什么时态,宾语从句的时态只有在主句是过去时的情况下才发生改变,如果主句现在时,后面的从句该什么时就什么时,这句主句是现在完成时,从句不受影响,从句有recently,用have been 没错
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