Italian has two very common past tenses: the passato prossimo and the imperfetto. Both describe the past, but they present actions and situations in different ways. The passato prossimo generally presents an event as a completed whole, while the imperfetto describes past habits, situations, and actions that were in progress, without focusing on when they began or ended. In English, both tenses can sometimes be translated with the simple past, so the English translation alone does not always show which Italian tense is needed.
Completed Events and Past Habits
The passato prossimo is commonly used to describe an action that happened and is presented as a completed event. It is especially useful when talking about what someone did on a particular occasion, such as yesterday, last weekend, or during a vacation. For example, Ieri ho mangiato una pizza means Yesterday I ate a pizza. The sentence presents eating the pizza as one completed event. The imperfetto, on the other hand, is used when an action happened regularly or was a habit in the past. For example, Da bambino mangiavo spesso la pizza means When I was a child, I often ate pizza. Here, the sentence describes something that happened repeatedly rather than one particular occasion. The important difference is not how long ago the action happened or whether the habit eventually ended, but how the speaker presents it.
Ieri ho mangiato una pizza. — Yesterday I ate a pizza.
Da bambino mangiavo spesso la pizza. — When I was a child, I often ate pizza.
The imperfetto is also commonly used to describe situations, people, places, and conditions in the past. It tells us what something was like, how someone felt, or what the weather was like, without focusing on the beginning or end of the situation. For example, La casa era grande means The house was big. This use is especially common with verbs such as essere (to be) and avere (to have). For beginners, the most useful distinction is to associate the imperfetto with past descriptions and habits, while using the passato prossimo to report particular completed events.
La casa era grande. — The house was big.
Actions in Progress and Completed Events
The two tenses are often used together when one action was in progress and another event happened. In this situation, the imperfetto describes the action already happening, while the passato prossimo introduces the completed event. For example, in Studiavo quando Maria ha telefonato, the verb studiavo tells us that studying was in progress, while ha telefonato tells us what happened during that time. This is a common way to describe past events in Italian. More generally, the imperfetto can provide background information about a past situation, while the passato prossimo identifies an event that happened in that situation.
Studiavo quando Maria ha telefonato. — I was studying when Maria called.
A useful way to choose between the two tenses is to think about what you want to communicate. If you are answering the question What happened?, the passato prossimo is usually the better choice. If you are explaining What was happening?, What was it like?, or What did you use to do?, the imperfetto is generally more appropriate. Time expressions can provide clues: ieri (yesterday) often appears with the passato prossimo, while sempre (always), spesso (often), and ogni giorno (every day) frequently accompany the imperfetto when describing habits. However, these expressions do not automatically determine the tense. The important point is how the speaker presents the action or situation.
Summary: Passato Prossimo vs. Imperfetto
| Situation | Passato prossimo | Imperfetto | Example |
| Completed event | Presents an event as a completed whole | Not normally used to report a single completed event | Ho comprato un libro. — I bought a book. |
| Past habit | Can describe particular completed occasions | Describes what someone regularly did | Ogni giorno camminavo. — I used to walk every day. |
| Past description | Can present a situation as a completed whole | Describes how things were | Ero stanco. — I was tired. |
| Action in progress | Can describe a completed action | Describes what was happening at a particular moment | Ieri alle otto dormivo. — Yesterday at eight, I was sleeping. |
| Event during an ongoing action | Identifies the event | Describes the ongoing action | Mangiavo quando hai chiamato. — I was eating when you called. |