Question

'He has been working since two hours' Find error in preposition

Answer 1

He has been working for two hours...

error- since, Word comes in.place of since will be for

Answer 2

He has been working for two hours.

• The error in the preposition is 'since'.
• It is used to refer to an event in the past.
• But in the given sentence, the subject is continuing to work.
• So, the relevant preposition will be 'for'.
• The correct sentence means that the subject started working in the past and has continued with it.
• The correct sentence is - 'He has been working for two hours.'