I have ______ an unbrella to your mother答案用了brought,可是have不应该是构成现在完成时的吗,为什么是用brought而不是bringing?

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I have ______ an unbrella to your mother答案用了brought,可是have不应该是构成现在完成时的吗,为什么是用brought而不是bringing?
I have ______ an unbrella to your mother
答案用了brought,可是have不应该是构成现在完成时的吗,为什么是用brought而不是bringing?

I have ______ an unbrella to your mother答案用了brought,可是have不应该是构成现在完成时的吗,为什么是用brought而不是bringing?
现在完成时的结构是:have done sth
bring的过去分词就是brought