Respuestas a la pregunta
begin: began
play: played
leave: left
study: studied
blow: blew
clap: clapped
know: knew
keep: kept
listen: listened
break: broke
teach: tought
enjoy: enjoyed
run: ran
go: went
kiss: kissed
am-is-are: was-were
speak: spoke
wear: wore
drive: drove
eat: ate
grow: grew
drag: dragged
walk: walked
wash: washed
cost: cost
call: called
hurt: hurt
believe: believed
help: helped
cut: cut
invite: invited
fly: flew
Explicación: A algunos verbos se les agrega -ed, otros cambian y otros se quedan igual. Generalmente hay una lista de estos al final de los libros de texto la cual te dice cual es cual para poder identificarlos.
1. arrived
2. enjoyed
3. cried
4. carried
5. helped
6. played
7. watched
8. rained
9. stopped
10. promised
Estos son los que se les agrega -ed al final. Se les llama regular verbs.
1. told
2. spoke
3. made
4. won
5. bought
6. drunk
7. read
8. gave
9. found
10. sold
11. ate
12. sang
A estos no se les agrega -ed, en cambio se modifican. Se les llama irregular verbs