This sentence is from the dictionary: "The announcement that war had started set off a huge selling frenzy in the stock market."
I think, the subject of "set off" is "the announcement", and it is third person singular. So, "set off" should take the form of third person singular, and be "sets off", I thought.
Is my line of thought wrong? Could you tell me, please?
Top answer
I'll give you a hint, Takehisa. It's not meant to be in the present simple; think of an alternative tense.
— Teechr
I'll give you a hint, Takehisa.
It's not meant to be in the present simple; think of an alternative tense.
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That's correct, and more specifically, the earlier action "had started" is in the past perfect tense, and the later action "set off" is in the past simple tense.