1.为何用has而不用had:Can you make sure where Lucy has

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1.为何用has而不用had:Can you make sure where Lucy has
1.为何用has而不用had:
Can you make sure where Lucy has put the dictionary?
2.have taken和having taken,为何是have
Lily have taken my umbrella by mistake.

现在完成时态,had就过去完成时态了,需要一个过去的时间点做参照
应该是Lily has taken my umbrella by mistake.

1.为何用has而不用had:Can you make sure where Lucy has Can you make sure ___where Alice has put___ the gold ring?为什 can you make sure ( )the mp4?a：where james had put b：where h Can you make sure where Alice had put the gold ring?划分句子成分 can you count to make sure Val the library has all eight boo 1.Can you make sure ( ) he `s not yet had time to make a judgement.为什么这里用had 而不用has呢 Can you make sure ______the gold ring?A.where Can you make sure where ______ put the dictionary? Can you make sure ______the gold ring? A. where Is there a zoo that we can see tigers arond?为何用that而不用where Lucy has more friends than Lily -----.后面为啥用does ,而不用has