Tell me please the difference between the following sentences.

I am obliged to do the work.

I am obliged to doing the work.


Obliged to do something is correct:

It was raining, so I felt obliged to invite him into the house.

Employers are legally obliged to pay the minimum wage.

Circumstances had obliged him to sell the business.

So, use the to-infinitive after oblige.

  • However, you can also be obliged to be doing something, meaning to be occupied or busy with something. – Ronald Sole Mar 1 at 11:59
  • Also, obliged to someone for doing something – Lamplighter Mar 1 at 12:09

[1] I am obliged to do the work.

[2] I am obliged to doing the work.

The difference is that only [1] is correct. The PP with a gerund-participial clause as complement in [2] does not satisfy the complement requirement of "oblige".


The rule is that the gerund form after adjectives is used only if they are followed by prepositions, for example: famous for/tired of/proud of doing something. In your sentence "to", following the adjective obliged, is not a preposition but the sign of the infinitive case. Besides, the sheer definition of (to be) obliged is (to be) under a moral obligation to do something.

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