English Grammar : article, syntax, verbs conjugation, English spelling

The past tense is used to talk about events which have already happened: “Last night, after he ate dinner, Dennis washed the dishes.” “The Gomez family moved to Phoenix in 1974.” The regular form of the past tense is formed by adding “-ed” to the end of the verb: “I talked to him yesterday.” “Janice showed us her photographs.” “We visited our grandparents last week.” “The children played in the snow all afternoon.” Some verbs do not have past tense “-ed” forms. For example:

Base form Past tense
think thought
come came
begin began
see saw
run ran