Do I need to put a comma in this phrase "Исходя из этого можно понять(,) насколько сложно..."?
2 Answers
Actually, two commas must be put in this sentence:
Исходя из этого, можно понять, насколько сложно... .
The first comma is because phrases introduced by the preposition исходя из
are separated by commas if they are not a part of the predicate.
The second comma is because clauses introduced by насколько
are separated by commas in Russian.
Yes, you have to put a comma in this phrase because the clause, introduced by "насколько" needs a comma, being a separate close with a subject and a predicate.