First, the pronunciation is different
Caught off guard, the pinyin is Cuosh ǒ ubjí.
The pronunciation of being caught off guard is cù bù jí fáng.
Second, the interpretation is different.
1, caught off guard: it means that something has suddenly gone wrong and can't be handled at the moment.
2, unprepared: describe things suddenly, unprepared.
Third, the sources are different.
1, caught off guard
Said by: Yuan Anonymous "A Thousand Miles of Solitude" Wedge: "Tonight, I will lead a hundred riders to steal the camp and go back and kill it by surprise."
Tonight, we led dozens of troops to steal the camp, take a trip and kill him.
Step 2 be caught off guard
Said by: Yun's Notes on Reading Wei Caotang Part I: "I didn't light a candle, didn't raise my voice, and was caught off guard. It is my husband who is a ghost, not my husband. "
I didn't light the lamp, and I didn't make any noise, which made people too late to guard against it. Suddenly, it was Mr. Wang who offended the ghost, not the ghost who offended Mr. Wang. ..
Fourth, the usage is different.
1, caught off guard: normal; As predicate, object and complement; Something that happened suddenly.
2, unprepared: formal; As a predicate, attribute, adverbial.