The outline was then drawn in green and the centre point plotted in the centre of the circle as a red dot.

Is it necessary to add 'was' before 'plotted' to present a passive voice? I sometimes see some sentences like this one, which does not have 'be/was/were/is/are' before the verb of the past perfect tense.

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    It's not a matter of necessary to add 'was' before 'plotted'. It's okay to "delete" the second (repeated, predictable) instance of auxiliary verb was in contexts like this. But you don't have to - it's entirely an optional stylistic choice that has no effect on meaning. Oct 14, 2018 at 14:26

1 Answer 1


You can delete the word "was" before "plotted" in this example. You don't have to delete it; it is a style choice. Deleting the word "was" is correct in formal English.

There is more redundancy that you can remove: "The centre point ... in the centre". That is a "tautology". You can just say "The centre of the circle [was] plotted as a red dot.

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