关于appreciate的选择题

you doing 和 your doing是两个概念 I would appreciate ( your turning)the radio down.是所有格，等于I would appreciate that( you turn)the radio down.句型不一样，后者是宾语从句，前者不是从句。你可以这样理解，appreciate有两个用法，appreciate sth.和appreciate + 宾语从句。appreciate sth.的用法动词变成动名词，前面加所有格，表示处于状态和做动作的人是谁。所有格有时可以省略成宾语，成为 I would appreciate ( you turning)the radio down. 另外，动词mind也可以这样用。 Would you mind your opening the door? Would you mind (that)you open the door?

首先回答第一个问题：your turing 的your是为了说明turn 这个动作的发出者。没有your的话，会产生歧义，究竟是“我”想自己关掉收音呢，还是别人。 appreciate 后要接doing/that从句。所以B显然不对。 其次，i really appreciate you offering to help me.这个句子你要分开。第一部分是i really appreciate...

A是动名词 you和your都可以.

后面是对的you your都可以 you是宾格

appreciate sb. doing sth.和appreciate ＋动名词、sth. 是固定做法

答案是 you turning。