What are the difference between these two sentences: 1. the message are explained 2. the message were explained when we should use "are" with past participle as in number 1? Thank you~
Top answer
Neither sentence is possible. 'Message' is a singular subject. Try again.
— Mister Micawber
Neither sentence is possible.
'Message' is a singular subject.
Try again.
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1."Runge-Kutta methods for the solution of systems of ordinary differential equations (ODEs) are described." 2."Runge-Kutta methods for the solution of systems of ordinary differential equations (ODEs) were described."
1."Runge-Kutta methods for the solution of systems of ordinary differential equations (ODEs) are described."-- Now or in the present text or in the near future 2."Runge-Kutta methods for the solution of systems of ordinary differential equations (ODEs) were described."-- in the past or in a past text.