2019新人教版高中英语必修二Unit1单元同步语法讲练

2019新人教版高中英语必修二单元同步语法 Unit 1 定语从句（三）-----“介词+关系代词”引导的定语从句 当关系代词在定语从句中作介词的宾语时，我们通常用“介词+关系代词”引导定语从句。关系代词只能用which或whom。先行词指物时，用which；先行词指人时用whom。“介词+ which（指物）/ whom（指人）”引导的定语从句主要有以下几种情况： 1.单个介词+which/ whom 介词的选择： ①根据和从句中动词的搭配 ②根据和从句中形容词的搭配。 ③根据和先行词的搭 ④根据句意 注意：定语从句的谓语动词如果是以介词结尾的短语动词，则不可把介词移至从句之首。 如： look for, look after, pay attention to ,take care of , look forward to, listen to等。 The man with whom I talked just now is from Beijing University.刚才和我谈话的那个人是从北京大学来的。（talk with sb和某人说话） Yesterday I visited the West Lake for which Hangzhou is famous. 昨天我参观了杭州著名的西湖。（be famous for "以……而闻名".） He built a telescope, through which he could study stars. 他架起一架望远镜，通过它可以研究星星。（through a telescope通过望远镜） My computer, without which I can’t play computer games, broke down yesterday.  昨天我的电脑坏了，没有它我不能玩电脑游戏。 This is the pen that / which you are looking for. 这是我正在找的钢笔。 不说：This is the pen for which I’m looking. 2.介词短语+which/ whom Jack was a famous doctor, with the help of whom they succeeded in the operat