While scientists have learned the sequences of tens of thousands of proteins, they know the three-dimensional structures of only a small fraction of them.
2.
Non-indicative forms of the aorist ( subjunctives, optatives, imperatives, infinitives ) are usually purely aspectual, with certain exceptions including indirect speech constructions and the use of optative as part of the sequence of tenses in dependent clauses.
3.
Vivid future conditional ( future perfect indicative in the protasis, direct question with future indicative in the apodosis; protasis is changed to perfect or pluperfect subjunctive, according to the rules of the Sequence of tenses; apodosis similarly is changed to indirect question with the periphrastic-usus sim / essem ):
4.
As for wikipedia, it is quite bizarre and idiosyncratic and ideology driven : capitalisation rules foreign to any native form of English; insistence on metrics because it is world majority, but insistence on the spelling centimetre, which is the minority native and world spelling; a tendency of editors to remove proper usages of the sequence of tenses and the subjunctive and any writing above a 10 year-old level when they find it; the tendency of editors to begin an article, not with a definition of the subject itself, but with a tautology, or a definition of the title of the article, and so on.
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