When should we use ‘be’ and why ... Why is it possible to, and when is it possible, to ignore the subjunctive and use present simple or past simple instead? E.g.: ‘Why is it so important ...

There are some verbs that we don’t usually use in the continuous ... (h) Only in winter. [Use the present simple for truths and facts.] 2. Is it snowing in the UK? (g) Not right now.