Monday, June 17, 2019

prepositions - Why is there "of" here?



"When you delete your account, people won't be able to see it on Facebook. It may take up to 90 days to delete all of the things you've posted, like your photos, status updates or other data stored in backup systems".



Why the writer says "delete all of the things" not simply "delete all things" ?


what is the difference ?



I see this structure appears many times in English but have no idea why is that.


Is there any rule here?


Thank you



Answer



Determiners can be often followed by of.
of simply shows the parts included in the preceding word.


However, if you replace the object by a pronoun, you can't leave it off:




  1. all of the things.


  2. all the things.

  3. all of them.

  4. all them.



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