Re: Verb tense confusion - how can "could" be used to describe future events? can (could) and shall (should) are modal verbs and go together with another verb to indicate the tense
"I could fail math class next week."
I could have failed the math exam last week without all the tutoring you gave me."
"should' : you need to review in your dictionary all the uses of this word quite apart from that as past tense of 'shall'
'could' : Again, you will find these uses described in your dictionary. |