"More than necessary" vs. "more than are necessary"
- Don't buy more books than are necessary.
- Don't buy more books than necessary.
- We have three more doctors than are necessary.
- We have three more doctors than necessary.
What is the difference between the two constructions?
Solution 1:
Both structures are correct but, for the past fify years, "more than necessary" has come to be used more often than "more than is/are necessary". See Ngram below.
