but词性判断

He asked to see the warrant. The officer told him it wasn't there but to go ahead and start the search.

请问but在这里是什么词性。

He asked to see the warrant. The officer told him it wasn't there but to go ahead and start the search.

这个句子中不定式使用错误。应该改为过去时作谓语：

He asked to see the warrant. The officer told him it wasn't there but went ahead and started the search.

译文：

他要求看搜查令。警官告诉他没带搜查令，但却继续开始搜查。

曹荣禄 -

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刘永科 - 教育出版集团英语总顾问 & 英语系列图书主编 1秒前

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He asked to see the warrant. The officer told him it wasn't there but to go ahead and start the search.

这里，but 是个并列连词，之后是漏掉了一个谓语动词：began 或 continued。如果尚未开始搜查，就用began；如果已经开始了搜查，就用continued。不可能改动两个不定式。加了谓语动词后，两个不定式就不用改。

网友可以查查原文。

He asked to see the warrant. The officer told him it wasn't there but began to go ahead and start the search.

他要求看搜查令。警察告诉他那东西不在，而开始搜查。

He asked to see the warrant. The officer told him it wasn't there but continued to go ahead and start the search.

他要求看搜查令。警官告诉他那东西不在，但继续进行搜索。