In the past, talking about the t-shirt you bought yesterday, you would say, “It cost $10.” If you’re shopping right now and you’re looking at a t-shirt in front of you in the present, then you would say, “It costs $10” in the present. Now this verb does change in the present when the subject is he, she, or it. The verb cost is cost in the present, cost in the past, and cost in the past participle, which is what we use with the present perfect. I’ve seen a lot of students make the mistake of writing a sentence like this: Today I’m going to teach you all about some special irregular verbs in English that don’t change from present to past and past participle.
Hello students, it’s Shayna, your teacher from.
Advanced English Grammar Course Transcript:
