How serious was the accident happened nearby yesterday?

Is the usage of "how serious" correct?

  • 2
    How serious is fine, but in all but the most casual English the relative clause requires a relativizer (that or which) when its missing term is the subject. Jun 9, 2015 at 18:29

2 Answers 2


This particular usage of how is as follows:

how + adjective + be -> used to ask about the intensity of an adjective related to a noun.

How serious was the problem?

How serious was the accident?

Source: Advanced Grammar: For Academic Writing by Richard Stevenson

One could reply:

very serious, not very serious, not particularly serious etc.


Yes, this is the correct.. Although you need to add a "that" after accident to make the sentence grammatically correct.

  • 1
    Stoney said what you said, but he put a comment there. Doesn't this mean that this much can't make a good answer? This is better as a comment unless you be more elaborate.
    – M.A.R.
    Jun 9, 2015 at 18:37

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