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Grammar WELL- GroUNDED
can to show ability
could, may, might to show possibility
must to show obligation or probability
should, ought to to give advice
will to show willingness or a future action
would to show interest or desire
Subject/Verb agreement is never a concern with modals.
Present tense = modal + simple present verb
Ahmed can throwa baseball accurately.
Troy and Eve might attend the lecture.
She should be ashamed.
Past tense = modal + have + Past Participle
Emma must have gone home.
They would have won if Lisa did not get hurt.
Vincent should have studied harder.
He could have been a great actor.
*There are exceptions to some modals in the past tense.
can--the past tense of can is could. To show ability in the past
tense, the word could comes before a simple present tense verb.
When he was younger, Ahmed could throw a baseball well.
must--when used to show obligation, the past tense of must is
had to. To show obligation in the past tense, the words had to
come before a simple present tense verb.
Joy had to do her homework.