1. The past of be is ____ / ____, and the past of can is ____. We add ____ to make negatives. And to make questions we change the ____ of the subject and the verb. 2. ____ verbs add -ed or -d in the simple past. 3. ____ verbs ____ their form in the simple past. 4. Regular and irregular verbs (except ____) use: -didn't + base form to make ____ -did + ____ + base form to make ____.

REGULAR & IRREGULAR VERBS-GRAMMAR RULES

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