the dictionary so often__by the english teacher is a good one 为什么是used 不是 is used

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the dictionary so often__by the english teacher is a good one 为什么是used 不是 is used

the dictionary so often__by the english teacher is a good one 为什么是used 不是 is used
the dictionary so often__by the english teacher is a good one 为什么是used 不是 is used

the dictionary so often__by the english teacher is a good one 为什么是used 不是 is used
the dictionary so often used by the english teacher is a good one.
英语教师经常用的词典是非常好的东西.
the dictionary 主语
so often used by the english teacher 这是used引导的定语从句修饰 the dictionary
谓语 is
宾语 a good one.

因为有谓语了“is”,这里used相当于一个形容词,修饰 字典
意思是,英语老师用的字典非常好
非限制性定语从句起补充说明作用,缺少也不会影响全句的理解。在非限制性定语从句的前面往往有逗号隔开,如(1)The house,which I bought last year,has a lovely garden. 我去 年买的的房子带着个漂亮的花园。(2)This novel, wh...

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因为有谓语了“is”,这里used相当于一个形容词,修饰 字典
意思是,英语老师用的字典非常好
非限制性定语从句起补充说明作用,缺少也不会影响全句的理解。在非限制性定语从句的前面往往有逗号隔开,如(1)The house,which I bought last year,has a lovely garden. 我去 年买的的房子带着个漂亮的花园。(2)This novel, which I have read three times, is very touching. 这本我已经读过三遍的小说很感人。1.非限定性定语从句可将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数,例如:(1)He seems not to have grasped what I meant, which greatly upsets me.他似乎没抓住我的意思,这使我心烦。(2)Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽,这就叫做蒸发。2. 在非限定定语从句中,有时as也可用作关系代词,若as在从句中作主语,其引导的句子可以放在句首,也可以放在句中。例如:(1)The boy has as much progress as we had expected. 正像我们所预料的那样,这个男孩取得了大的进步。(2) As everyone knows ,China is a beautiful country with a long history . 每个人都知道,中国是一个有着悠久历史的美丽国家。3. 在非限定性定语从句中,不能用于在从句中做主语(1)The boys who are playing football are from Class One. 在踢足球的男孩们是一班的。(2)I helped an old man who lost his way yesterday . 昨天,我帮助了一个迷路的老人。

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