用于表示占有（possession），归属（belonging）或出身（origin）的： a friend of mine the president o ...

一句话总结：做某事涉及到其它人、事物、意识时用with，with有“和/用/加”的意思。 with + 人 1、用来 ...

用来表示做某事的人或事： The motorcycle was driven by a tiny bald man. We were amazed by what she ...

在比较中用来指事物的程度： used in comparisons to refer to the degree of something: linestart She ...

that作为连词，主要有二点： 1.引导宾语从句（可以省略）。 例： I think (that)he is very good. 2. ...