I wouldn't do that. 構文

if I were you, I wouldn't do that. が元々の形で、I wouldn't do that は if I were you の部分が省略されている。2:07 I wouldn't do that. 私ならその危険なネコに絶対に手を触れたりしないわ。

Audi “The Debriefing” - Marvel Studios’ Avengers: Endgame

1:37 I wouldn't answer that if I were you.

Regina Wakes Up - Once Upon A Time

1:22 I wouldn't do that, if I were you.

Regina's Birthday Request - Once Upon A Time Sneak Peek

1:56 I wouldn't do that.

The Shadow (1994) - The Evil in the Hearts of Men Scene (1/10) | Movieclips

参考リンク
http://bridge-english.blogspot.com/2013/10/if-i-were-you.html  if I were you 構文

練習問題解答
b-1017 I wouldn't do that if I were you