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-ing form with preparatory it

Hi, there,

There's a rule in Aim High 6 (the book I'm teaching) says:

'it' can be used as a preparatory subject or object for an -ing form, especially in informal style. We often use it with adjectives.

And It cites the following examples:

  • It was amazing walking along the Great Wall.
  • It was interesting hearing what he had to say. 


On the other hand, advisable as an adjective in Oxford Dictionary is followed by to + inf. 

  • It is advisable to practise each exercise individually at first.


The question is: Is it right to say:

  • It's not advisable reading such stories before sleep.


 I know that we can say:

  • Reading such stories before sleep is not advisable.


Another question:

Which adjectives should be followed by V+ing, and which ones should be followed by a full infinitive?

Is the matter similar to the Verb patterns topic? 


Many thanks ...

Last edited by Hussein Hassan
Original Post