新概念英语第三册原文文本学习Lesson20(5)已发布,欢迎大家查看。新概念英语第三册内容主要针对的是基础比较薄弱的同学,为了方便同学们可以更好地巩固英语基础,小编还整理了新概念英语第三册课文、新概念英语第三册音频相关内容,便于同学们一起学习!
Key structures
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定语从句中介词位置
决定介词位置的4个因素:
1,在书面语中,当定语从句的关系代词是介词的宾语时,能够把可移位的介词提前放在关系代词的前面
e.g. This is the person about whom I was telling you.
e.g. Is this a book for which you asked me?
2,在口语中,介词一般要放在从句的末尾
3.有些“动词+ 介词”的合成词组被看成是不可分割的语言单位,这个时候介词必须紧跟动词,不可移动,如:take after account for
4.在很多情况下,介词和关系代词构成独立的介词短语,在句中起状语作用,与从句的谓语动词毫无关系,而不是谓语动词的一部分,这时介词始终位于关系代词之前
e.g. He described it as a very agreeable situation located within two small hills in the midst of which flowed a great river.(in the midst of跟后面的谓语动词flow没有任何关系)
e.g. Mrs. Ramsay received an anonymous letter in which the writer stated that Rastus was in safe hands.
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