1. 用作 give 的过去分词，引出过去分词短语作状语，意为“如果有……”，“假定……”等义，此时要注意其逻辑主语与句子主语保持一致，句子谓语是否用虚拟语气，要视句子的具体含义而定。如：

Given time, they’ll probably agree. 给以时间的话，他们可能会同意。（=If we give them time…或If they are given time…）

Given more attention, the trees could have grown better. 要是对这些树多加注意，它们会长得更好。（=If the trees had been given more attention, they could be grown better.)

2. 在现代英语中可用作介词，后接名词或代词，意为“考虑到”或“鉴于”。如：

Given their inexperience, they’ve done a good job. 考虑到他们缺乏经验，这工作他们已干得很不错了。

Given her interest in children, I’m sure teaching is the right career for her. 鉴于她对小孩的兴趣，我敢肯定教书是她最适合的职业。

注意，given 后也可接 that 从句。如上面两句也可以改为：

Given that they’re inexperienced, they have done a good job.

Given that she is interested in children, I’m sure teaching is the right career for her.

3. 用作形容词，意为“特定的”“一定的”“规定的”等，通常用作定语。如：

The work must be done within the given time. 工作必须在规定时间内完成。

They were to meet at a given time and place. 他们定了个特定时间和地点见面。

比较下面一句，given为过去分词，用作后置定语：

The book given to him was an English novel. (= The book which was given to him was an English novel). 送给他的那本书是本英语小说。