关于动名词的一个用法不解

亲亲号

动名词的形式有doing 和 having done，后者是完成式，用于发生在句子谓语动作之前的动作，
如That young man still denies having started the fire behind the store.
7 ~! ^) C. i7 a3 q但由于start是短暂动词，这里如果只用现在分词的一般式也是正确的把？而且意义没有太大区别？
% F; M, y. N1 h; [- h  sThat young man still denies starting the fire behind the store.
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类似还有这些句子
I repented shooting/having shot the bird
The man in the corner confessed to telling/having told a lie to the manager of the company.
' `; D& B0 ]& E' ^5 yThe student denied cheating/having cheated on the exam.
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1 }- r8 r0 s6 l+ Y) J6 }! m+ s请问这样理解是正确的么？


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nullname

个人认为，楼主这些例子里面的 having+pp 形式是从句简化导致的变形。

& n6 x/ u# A6 H+ O9 y即：That young man still denies having started the fire behind the store. 这句话跟动名词一点关系都没有。

我觉得上句应是下句的简化：
That young man still denies that he had started the fire behind the store.

4 ]1 S( ^0 Q, F; e! B. f同理：
3 p" S0 C& B( K+ O0 A4 E0 qI repented that I had shot the bird
简化为
. ^% {( {2 b7 J: f8 X$ ?I repented having shot the bird

' K" ]3 p$ u% F1 \1 y参考：语法俱乐部   旋元佑

pisgfa

5 K" R# n/ G3 j# K; y5 V2 S两个句子都没问题，意思是一样的。having started 强调 放火发生在否认之前。
7 D6 k) I5 a! E% |  q& t- |如果没有 supporting references 的话，推荐用 That young man still denies starting the fire behind the store. 更符合外国人习惯。

That young man denied that he had started the fire before sunrise.

5 _( y. P& M: _- t3 r7 PThat young man still denies having started the fire before sundown.
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williamshein

个人同意三楼的解释，having done和doing都是可以作为动名词使用，但是语言的简化是因为用了doing不会产生误解，照样理解，并且这样还更简单，所以才简化成这样，至于楼主提到的start的短暂性，这里我觉得其实根本不需要考虑，因为不管短暂还是延续性都是发生在过去的，用having done都是为了强调发生的时间的先后顺序。用一些的初中、高中的例句来解释：I am sorry for interrupting (或having interrupted） you./ I remember locking (having locked) the door. 理解起来都是一样的。