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PASSO 2Aggiungi gli esercizi che ti piacciono ai Preferiti
Use the simple past tense (and not the present perfect) for an action complete in the past at a stated time.
When a sentence has a word or a phrase denoting past time, like yesterday, last night, last week, last year, then, ago, etc., always use a simple past tense.
As a rule, verbs denoting a state rather than an act have no continuous forms, like understand, know, believe, like, love, belong, prefer, consist, mean, hear, see, etc.
Don't use must and ought to as past tenses. To express a past duty (which wasn't done) use the perfect infinitive without to after ought to or should, or expressions such as had to, was obliged to.
In indirect speech use must and ought to as past tenses: He said he must do it.
Use the present tense in a future conditional in the if clause and the future tense in the main clause
But the future tense may be used in an if clause expressing a request: If you will/'ll give me some money I will/'ll buy you a drink.