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understand的过去式和过去分词和现在分词

understand的过去式和过去分词和现在分词

understand的现在分词 understanding;过去式 understood;过去分词 understood;

understandv.懂;理解;领会;了解

We need a clear understanding of the problems involved.

我们需要了解清楚所涉及的各种问题。

This research has done much to advance our understanding of language learning.

这项研究大大提高了我们对语言学习的认识。

He\'s too young to understand the ways of the world.

他还太年轻,不懂得处世之道