What are the facts regarding What Is the Difference Between Burnt and Burned? Read our comprehensive breakdown here.
The past form of the verb “can” is “could”, this is just used for the past simple of the verb. Just as the present form, it doesn't change for any of the pronouns.
James H. Sterling
Environmental Science & Climate Journalist
James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.