1. El pretérito de los verbos I to Y y algunos irregulares

2. I to Y verbs Verbs that end in -aer, -eer, and
oír, the él/ella/usted forms use the ending "yó" (rather than ió) and the ellos/ellas/ustedes forms use the ending "yeron" (rather than ieron). The remaining forms gain a written accent over the letter "i."

3. I to Y verbs Let’s take a look at the verb “creer”, which means what?
creíste
creyó
creímos creísteiscreyeron
Other verbs like this one are:
caer(se), leer, and oír.

4. I to Y verbs
As always, there are exceptions to any rule and this one has an exception. Verbs that end in -uir still have the I to Y change, but gain a written accent over the letter "i"
in the ‘yo’ form only.
construí
construiste
construyó
construimos
construisteis
construyeron

5. I to Y verbs Other verbs like ‘construir’ are:
incluir, destruir, contribuir, and huir.
What do these verbs mean?

6. REMEMBER: I to Y change in the 3rd person singular,
“él / ella / Ud.” form
and the 3rd person plural
“ellos / ellas / Uds.” form
-aer / -eer / and the verb oír have
accented “i’s” on all of the other forms
-uir verbs only have and accented “i” in
the “yo” form

7. Irregular verbs
First know that irregular verbs NEVER EVER have accents. Say it with me…
“IRREGULAR VERBS NEVER EVER HAVE ACCENTS!”
There are a lot of irregular verbs so we will divide them into Type 1 & Type 2 verbs.
We’ll look at a couple today.

8. Type 1 verbos ‘gemelos’ idénticos
These are your ‘2 for 1’ verbs. What a bargain… ‘ser’ and ‘ir’ are conjugated identically.
fui
fuiste
fue
fuimos
fuisteis
fueron
*Single-syllable forms NEVER EVER use accents.

9. More type 1 irregular verbs
Even though ‘ver’ appears to be a regular verb, it isn’t. Here are the forms: vi
viste
vio
vimos visteis vieron
Can you guess what makes it a type 1 irregular?

10. The other type 1 irregular verb
This next verb is just like ‘ver’ (it is a little confused; it thinks it is an -er/-ir verb)… so it could be considered another 2 for 1 verb. Just change all of the v’s to d’s and ta-da! vi
viste
vio
vimos
visteis
vieron di
diste
dio
dimos
disteis
dieron

11. Type 2 irregular verbs
These are three type 2 verbs you will need to know for now…
estar
tener
hacer
poner
All of these have irregular stems, hence irregular verbs.
Do you think these verbs will have accents?

12. Type 2 irregular verbs
These verbs all have the same endings… regardless of it being an
–ar, -er, or –ir verb. It is a cross between the two sets of endings. -e
-iste -o
-imos
-isteis
-ieron

13. Type 2 irregular verbs
Let’s look at the verbs with the “uv” stem. Note: the same endings (-er/-ar)
tuve
tuviste
tuvo
tuvimos
tuvisteis
tuvieron
estuve
estuviste
estuvo
estuvimos
estuvisteis
estuvieron

14. Type 2 irregular verbs The last 2 you need to know for now are: hice
hiciste
hizo
hicimos
hicisteis
hicieron
puse
pusiste
puso
pusimos
pusisteis
pusieron