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构筑不要气馁。顺便帮你一下having done的用法:
Neuroscientists, having amassed a wealth of knowledge over the past twenty years about the brain and
its development from birth to adulthood, are now drawing solid conclusions about how the human brain
grows and how babies acquire language.
A. Neuroscientists, having amassed a wealth of knowledge over the past twenty years about the brain
and its development from birth to adulthood, are
B. Neuroscientists, having amassed a wealth of knowledge about the brain and its development from
birth to adulthood over the past twenty years, and are
C. Neuroscientists amassing a wealth of knowledge about the brain and its development from birth to
adulthood over the past twenty years, and are
D. Neuroscientists have amassed a wealth of knowledge over the past twenty years about the brain
and its development from birth to adulthood,
E. Neuroscientists have amassed, over the past twenty years, a wealth of knowledge about the brain
and its development from birth to adulthood,
aeoluseros对于Having done知识点的补充说明:
1) 不能作为名词结构,因此不能⽤用该结构作主语。
2) 我对定语、状语的理解是这样的:有的时候同⼀一个成分、结构可以做定语,也可以做状语,只要
区分被修饰对象与结合时态等分析逻辑上能不能合理修饰就够了,没必要太在意是做定语还是做
状语。也就是说,区不区分定语、状语都可以,关键是要明⽩白定语和状语的功能都是“修饰”(有点
像废话,不过我的意思是平时我统⼀一把他们记为“修饰语”,只有在做题⽬目解释的时候才区分⼀一
下)。
prep1-188中,A选项"having amassed a wealth of knowledge over the past twenty years about
the brain and its development from birth to adulthood",你可以把这个成分理解成状语,也可以
理解为定语,修饰的都是Neuroscientists这个主体或这个主体发出的动作,只要你把having看做定
语和状语时,句意理解起来是⼀一样的,那么就没有歧义问题。
⽽而prep1-97:Industrialization and modern methods of insect control have improved the standard
of living around the globe while at the same time they have introduced some 100,000 dangerous
chemical pollutants, having gone virtually unregulated since they were developed more than 50
years ago.这⾥里⾯面having可能修饰pollutants,也可能修饰they have introduced some 100,000
dangerous chemical pollutants整个分句,所以having产⽣生了修饰歧义
3) having done可以做⾮非限定性修饰,不能做限定性修饰。
夸克的语法⼤大全⾥里⾯面明确写出having done做限定性修饰是错误的:
The perfective aspect cannot usually be expressed in the nonfinite clause:
wrong: The man having won the race is my brother.
correct: The man who has won the race is my brother.
也就是说.完成时的ing分词形式(having done)作为限制性的修饰是不可以的,但是可以作为⾮非限制
性的修饰。
4) having done短语中所表达的内容发⽣生在主句动作之前
5) When having done 结构⼀一定错错,因为不应该有 when。单是 Having done 就够了。Have 有很
多地⽅方与正牌动词不同,When 后就不能⽤用 having 了。原因是 having done 是过去,⽽而 when 是
当时,所以有冲突。 |
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