know的语法

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今天分享的动词—— know

knows （三单）- knowing（现在分词）- knew（过去式）- known（过去分词）

know 表示 “知道，了解，明白”

其用法与如下：

know ... 知道/了解...

I know him.

我知道/了解他。

Do you know this place?

你知道这个地方吗？

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know + 句子；知道/了解...（宾语从句）

I know （that）tomorrow is your birthday.

我知道明天是你的生日。

I don't know what he wants to do now.

我不知道他现在想要做什么。

Do you know where the supermarket is?

你知道超市在哪里吗？

注意：know 后面的宾语从句要用陈述语序。（见文章：宾语从句）

know + 特殊疑问词 + to do； （重点用法）

I don't know what to do next.

我不知道接下来该做什么。

He knows how to do it.

他知道怎么做。

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We don't know where to go.

我们不知道该去哪里。

注意：此结构为宾语从句的变形；

如：I don't know what to do next.

= I don't know what I should do next.

当从句的主语与主句的主语(或宾语)相同时，才能变形；

如：My mom let me know how I could make the soup.

妈妈让我明白了怎样做汤。

从句主语 I 与主句的宾语 me 一致，可变形：

= My mom let me know how to make the soup.

如：I don't know when she will arrive in Chongqing.

我不知道她什么时候到重庆。

此时主句的主语 I 与从句的主语 she 不一致，不能变形；若变形，意义也就变了；

I don't know when to arrive in Chongqing.

我不知道什么时候到重庆。（我到重庆，而不是她）

know about / of... 了解，知道...

两者有较小的区别，初中基本不考查，了解即可；

know about 表示了解的程度更深

know of 表示有听说，知道并不一定了解

I know nothing about it.

我完全不了解这个。

I don't know about him, but I know of him.

我不了解他，但听说过他。

as far as sb. know 据/就某人所知 （阅读题经常出现）

as far as I know 就我所知

As far as I know, Jim is interested in music.

就我所知，Jim对音乐感兴趣。

As far as I know, five people were killed by the accident.

就我所知，有五人死于这场事故。

known 为过去分词，可做形容词，

与初二上册学习的“famous”意思相同，表示“为人所知的，闻名的”；构成短语如下：

be known/famous for... 因为...而闻名

be known/famous as... 作为...而闻名

be known/famous to... 为（某人）所熟知

Edison was famous/known for his great inventions.

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爱迪生因为他的伟大发明而闻名。

He was famous/known as a great scientist.

他作为一个伟大的科学家而闻名。

He is famous/known to all of us.

对于我们而言，他非常出名。

初中阶段，famous 的出现频率更高，必须掌握其短语，但 known 的用法也是需要知道的！