Is correct that gerund always be used after preposition?
Is "either" a preposition? because I noticed verb following it always in gerund form.
Ex: Subject complements complete the meaning of the subject by either describing or renaming it.
Gerund can be in the following position:
1) he is proud of earning more money.
2) He is studying english.
3) Practicing more makes you better.
4) This playing boat belongs to her.