4
Am I correctly using the verb in both cases?
There might be situations where the above strategies become invalid due to inconsistency of parameters or data issues.
Inconsistency of parameters or data issues become invalid some of the above strategies.
1I don't see anything wrong with OP's example #1. To my ear, it's purely a stylistic choice whether to use are or become. Or indeed, whether to use invalid or invalidated, which you implicitly acknowledge yourself by using the latter in your rephrasing of OP's ungrammatical #2. But since he was specifically asking about *the verb* I think it would have been better to stick with the same word for both rephrasings. – FumbleFingers Reinstate Monica – 2013-04-10T22:19:01.817
@Fumble: You may be right about are vs. become. We have no context, no info that says "these strategies are OK till X or Y occur; then they become invalid". If that's truly the case, then become is preferable. But if we already know that X or Y, or both, is true, then are is preferable. That's semantics, not style. Re: invalidates, another semantics problems the verbosity problem. Same meaning in fewer words is almost always better. My change means that I don't think OP was using the verb properly in this S. – None – 2013-04-11T01:30:15.660
Well, it's not like we have no contextual support for become - preceding *there might be situations* implies that there haven't been any such in the past (or at least, that they haven't been identified yet). And if such situations (the ones with inconsistent parameters or data problems) do arise, it's perfectly reasonable to say they [will] "invalidate" the strategies. Just as it is reasonable to say the strategies "become invalid" when faced with such situations. I still think all permutations are fine. – FumbleFingers Reinstate Monica – 2013-04-11T03:18:24.960