Correct, but you've placed the verb in the past tense. Here's the present tense:The rule of tumb is, with he, she, and it, "s" is used; e.g., he eats, she cries. Words in negative form;e.g., he did not eat or she did not cry. The "s" is omitted. Correct?.
EX: He does not eat.
EX: She does not cry.
Note that, -s is still there. It moves over to the auxiliary verb "does"; e.g., eats => does not eat; cries => does not cry.
"sport" refers to one, and "sports" refers to many. There are exceptions, though. Do you have a particular example in mind?What is the difference of sport & sports.
It's "I am concerned."Do I write as far as I'm concern or concerned. How to use concern & concerned in a proper English.
EX: It is a concern of mine.
EX: I have a concern.
EX: I have a couple of concerns.
EX: Do you have any concerns?
EX: This concerns you and me.
EX: Don't concern yourself.
EX: She was concerned about me.
EX: He is a concerned citizen.
It's "to close an account"; e.g., "to close the account(s)" or "to close my account(s)."Which is right, to close or to closed account or accounts.