Preterite vs. Imperfect

I'm just trying to clarify the differences. For example:
1. The food was delicious-imperfect?
2. The house was very big-imperfect?
3. The bump on his head was a tumor-imperfect?

Are these right? or should they be preterite?

I would choose preterite for (1), since the food was only delicious for a limited time (when it was eaten).

The others are imperfect tense.

To determine whether the verbs in these sentences should be in the preterite or imperfect tense, we need more context. The preterite tense is used to express completed actions in the past, while the imperfect tense is used to describe ongoing, habitual, or non-specific past actions.

1. "The food was delicious." - In this case, if you are referring to a specific occasion in the past when the food was delicious, you would use the preterite tense. For example, if you went to a restaurant and had a delicious meal, you would say "La comida estuvo deliciosa" (preterite). If you are describing the general quality of the food without referring to a specific event, then you would use the imperfect tense: "La comida era deliciosa" (imperfect).

2. "The house was very big." - Again, it depends on the context. If you are referring to the house being big when you saw it for the first time or during a specific event, you would use the preterite tense: "La casa fue muy grande" (preterite). However, if you are describing the house without specifying a particular time frame, you would use the imperfect tense: "La casa era muy grande" (imperfect).

3. "The bump on his head was a tumor." - In this case, it seems like you are describing a permanent characteristic of the bump on his head rather than a specific event. Therefore, the imperfect tense would be appropriate: "El golpe en su cabeza era un tumor" (imperfect).

Remember, the choice between the preterite and imperfect tense depends on the specific context and whether you are referring to a completed action or an ongoing state in the past.