Present Simple	I walk every day.	Past Simple	I walked yesterday.
			You walk every day.		You walked yesterday.
			He walks every day.		He walked yesterday.
			She walks every day.		She walked yesterday.
			It walks every day.		It walked yesterday.
			We walk every day.		We walked yesterday.
			You walk every day.		You walked yesterday.
			They walk every day.		They walked yesterday.

Present Simple	Do I walk every day?	Past Simple	Did I walk yesterday?
			Do you walk every day?		Did you walk yesterday?
			Does he walk every day?		Did he walk yesterday?
			Does she walk every day?		Did she walk yesterday?
			Does it walk every day?		Did it walk yesterday?
			Do we walk every day?		Did we walk yesterday?
			Do you walk every day?		Did you walk yesterday?
			Do they walk every day?		Did they walk yesterday?

Present Simple	I don't walk every day.	Past Simple	I didn't walk yesterday.
			You don't walk every day.		You didn't walk yesterday.
			He doesn't walk every day.		He didn't walk yesterday.
			She doesn't walk every day.		She didn't walk yesterday.
			It doesn't walk every day.		It didn't walk yesterday.
			We don't walk every day.		We didn't walk yesterday.
			You don't walk every day.		You didn't walk yesterday.
			They don't walk every day.		They didn't walk yesterday.