Could someone tell me if these are the only things that I need to know for the Preterite?

- the time expressions
-the ar and er/ir endings
-the car,gar,zar endings for the yo form
- no written accents: ir,ser,ver,dar

are there any other irregular endings? I think what I wrote is all I need to know to use the Preterite...but idk.

Thanks!!

The Preterit has more irregular verbs than any other tense!

Many verbs have an odd stem plus unstressed preterit endings, meaning no accent marks. One is andar
yo anduve, tu anduviste, él/ella/usted anduvo / nosotros/nosotras anduvimos, ellos/ellas/ustedes anduvimos.

Here are some others:
poder = pude, pudiste, pudo, pudimos, pudieron
poner = puse, pusiste, puso, pusimos, pusieron
decir = dije, dijiste, dijo, dijimos, dijeron (this one dropped the i)
saber = supe, etc.
tener = tuve, etc.

Sra

To determine if you have covered all the necessary information for the Preterite tense in Spanish, let's break it down into the key points you mentioned:

1. Time expressions: Yes, it's important to understand the time expressions commonly used with the Preterite tense. These include words/phrases like "ayer" (yesterday), "hace dos días" (two days ago), "la semana pasada" (last week), etc. Knowing when to use the Preterite tense in relation to specific time frames is crucial.

2. AR and ER/IR endings: Yes, knowing the regular endings for AR and ER/IR verbs in the Preterite tense is essential. For an AR verb, the endings are: é, aste, ó, amos, asteis, aron. For ER/IR verbs, the endings are: í, iste, ió, imos, isteis, ieron. These endings determine the conjugation of regular verbs in the Preterite tense.

3. CAR, GAR, ZAR endings for the yo form: Correct, some verbs have spelling changes in the yo form in the Preterite tense. For example, verbs ending in -car change the spelling to -qué in the yo form (e.g., buscar -> yo busqué). Verbs ending in -gar change the spelling to -gué (e.g., llegar -> yo llegué). And verbs ending in -zar change the spelling to -cé (e.g., empezar -> yo empecé).

4. No written accents: IR, SER, VER, DAR: True, the verbs IR (to go), SER (to be), VER (to see), and DAR (to give) have irregular conjugations in the Preterite tense, but they do not require written accents on any of their conjugated forms. However, it's essential to remember their irregular conjugations.

Now, in terms of your question about any other irregular endings, yes, there are a few more irregular verb conjugations in the Preterite tense that you should be aware of. These irregularities affect the verb stems or have unique endings. Some commonly encountered irregular verbs in the Preterite tense include HACER (to do/make), ESTAR (to be), TENER (to have), PONER (to put), and SABER (to know), among others. Familiarize yourself with the irregular conjugations of these verbs to fully understand the Preterite tense.

Overall, it seems you have a solid foundation with the time expressions, regular verb endings, and some irregularities in the Preterite tense. However, don't forget to practice and review irregular verbs to ensure you have a comprehensive knowledge of how to use the Preterite tense in different contexts and with a variety of verbs.