He worries more [than is necessary].

Might I trouble you to tell me whether or not 'than is necessary' is a relative clause modifying 'more'?

1 Answer 1


No. The than clause is a complement of more - it completes its meaning.

I suppose that semantically its function is similar to a non-restrictive relative clause; but

1) Than is not a relative pronoun (or a relative anything else)

2) The head of a relative clause is almost always a noun (or noun phrase), not an adjective or adverb.

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