Prepositions – ‘Be of the Size of’ or ‘Be the Size of’?

grammar

Tell me please which of the following sentences is correct.

  1. "The planet is of the size of the earth."
  2. "The planet is the size of the earth."

Best Answer

Both are grammatucal. But the use of the first preposition of is old-fashioned in modern English. So the second sentence as follows is far more common and idiomatic:

The planet is the size of (the same size as) the earth.

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