Should I repeat an auxiliary verb like "was" after "and" for a passive tense?

Here's an example:

It was shipped to laboratory in maximum time of one hour and was frozen at –80°C.

  • 1
    You can if you want to. It makes it clearer, but clarity is not everything. Note that the sentence has several article mistakes; laboratory needs an article, and so does maximum time Commented Apr 11, 2018 at 18:11
  • Yes, it should.
    – Qian Chen
    Commented Apr 11, 2018 at 23:41

1 Answer 1


The was shipped could easily be changed to shipped, they are both acceptable. The and was frozen at -80°C however should always have the was as without it, and froze at -80°C sounds more like a scientific observation of the freezing point than a statement of action.

It is perfectly fine to repeat "and" and "was", especially when they are this separated. If it was something more list-like, such as it was made, packed and shipped then in that situation, repeating "and was" sounds awkward. This is for the same reason repeating "and" in a list sounds awkward, though it is not necessarily wrong

Most of this is my opinion, this topic is kind of subjective. I am sure you could find something to this effect in a style guide, but I should be programing right now so I'm not going to go looking for one. ;)

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