这句句子的主语是什么？怎么分析？

sabrina2111

For a vaccine to get from phase I to phase III trials in just ten months, as rVSV-ZEBOV did, was unheard of at the time—a startling example of what urgency and organisation can do.

mxh3698

# e# i* C- y. j7 X! P$ w
$ Y' O4 E5 U+ y  S8 }4 l- E【It was】 unheard of to get from phase I to phase III trials in just ten months  for a vaccine, as rVSV-ZEBOV did——a startling example of what urgency and organisation can do.

  Q0 S* f; {4 {; b↓

4 g5 v- |4 A4 |. R1 }1 n$ m
5 L% d/ o0 r0 k- l2 d! j& {4 J【It was】 unheard of   for a vaccine  to get from phase I to phase III trials in just ten months  for a vaccine, as rVSV-ZEBOV did——a startling example of what urgency and organisation can do.


↓

For a vaccine to get from phase I to phase III trials in just ten months, as rVSV-ZEBOV did, was unheard of at the time—a startling example of what urgency and organisation can do.

+ ^4 l1 \# C0 o1 M3 I0 L- N

sabrina2111

mxh3698 发表于 2020-4-21 22:19
【It was】 unheard of  to get from phase I to phase III trials in just ten months  for a vaccine,  ...

. i7 Q: s  q: z3 I7 ^4 t请问大神：比如这句句子 介词+名词 短语开头  和只是名词开头，意思上有什么区别吗？比如这句我改成： A vaccine to get from phase I to phase III trials in just ten months, as rVSV-ZEBOV did, was unheard of at the time... 可以吗？为什么要加个for呢？有什么区别吗？

DannyTong1983

应该就是“For a vaccine to get from phase I to phase III trials in just ten months”，介词短语（词串）整体作主语。这种情况不太常见，怕是有一定教育背景的母语人士才会（经常）使用。对于这类“”非经典语法现象”，我们作为外语学习者，大概率是给它们安置一个能够自圆其说、看似较为合理的解释。以上完全是个人浅薄之见，权当抛砖引玉。

DannyTong1983

DannyTong1983 发表于 2020-4-21 22:58
应该就是“For a vaccine to get from phase I to phase III trials in just ten months”，介词短语（词串 ...

抱歉，引用的材料还是简单了些~ @ mxh3698 道友的解释，我表示认同，还原成一种“比较符合经典”的句子；至于加上介词 for，我个人的解读是，从翻译这个角度去考量。For a vaccine ..., was unheard of at the time 对于十个月内便能搞定三期疫苗实验（这种事情、情况等），真是闻所未闻。当然，我也一直以为，母语人士写出来的句子，多数情况会是更加地道和简洁，少数情况只有作者自己本人最为清楚（说不定是一种文字的显摆）。

sabrina2111

mxh3698 发表于 2020-4-21 22:19
1 G8 I% |6 B, _  S8 C+ X5 v; [【It was】 unheard of  to get from phase I to phase III trials in just ten months  for a vaccine,  ...

大神能不能帮忙分析这个帖子啊？https://www.pdawiki.com/forum/thread-40023-1-1.html
" I7 P: _( L+ [7 z1 N讨论到现在了。说是虚拟语气。

pan

sabrina2111 发表于 2020-4-21 22:39
请问大神：比如这句句子 介词+名词 短语开头  和只是名词开头，意思上有什么区别吗？比如这句我改成： A  ...

For is needed here.
" z7 ?" o7 {, c- }$ r* `
" R: u2 U) e; ^' |  MOr you can say, "it's unheard-of that a vaccine can go from Phase I to Phase II in just ten months".
" U+ ^; `6 n1 ]* TOr
3 ~, W$ o$ H; C8 j! x. t* Q9 aA vaccine going from .. to .. in ten months is unheard of.
& ?1 [$ w$ {7 g3 ]7 U& M8 S
Pan.

sabrina2111

pan 发表于 2020-9-29 15:07
For is needed here.
7 u! a, C- c8 r0 O) }' M; s* X6 @
Or you can say, "it's unheard-of that a vaccine can go from Phase I to Phase ...

我现在感觉是不定式做主语，to get from phrase I to phrase III... for a vaccine…

pan

I am no expert in grammar. All the grammar terms make my head spin.
# V+ c* K+ S7 L6 ?3 V
9 n# v5 C4 U' d, \) B) wBut I do know what's proper English. :P That's what matters in the end, right?
6 D! t  e% |$ c5 T* b
Pan.

pan

You are most welcome, Sabrina.

: j6 ~9 G  }6 t4 e$ `* V8 YPan.