Is it correct that I say"I touch on the book" or just "I touch the book" Sometimes I come across "touch on" in some abstract meaning, what is the difference?

  • If you're talking about literally touching a book (with your hands), then say I touch the book. If you're talking about metaphorically touching a book (addressing an idea in it), then say I touch on the book. Apr 9, 2019 at 2:47

1 Answer 1


touch on (something) TFD is an idiom

To discuss or deal with some topic informally or in passing.

As in:

We'll touch on that matter later in the meeting.

to touch v. TFD A basic definition is

To cause or permit a part of the body, especially the hand or fingers, to come in contact with so as to feel

  • Thank you very much! So usually, it is better to say"I touch a book" right?
    – Cindy
    Apr 9, 2019 at 2:24
  • correct ///////
    – lbf
    Apr 9, 2019 at 2:28

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