Student or Learner
I have always thought when we use would, the condition (if clause) should be in past tense. But I have encountered quite a few sentences where present tense is used (by the native speakers, by the way).
They would take our jobs away if we just sit back and do nothing about it.
Shouldn't it be,
They would take our jobs away if we just sat back and did nothing about it.
I agree with you, though others in the forum may not.
A related issue about 'would' came up in a previous thread, which has broadened into a more general discussion about modal auxillaries and this present/past tense contention.
I'll PM you when I post it in another thread - I'm still in the throes of putting it together.
In the meantime, I'm sure others will have some thoughts about the matter your raise here.