main
The Italian word 'principale' is used in the same way as the English word 'main'. It can refer to the most important or primary part of something, such as the main course of a meal or the main point of an argument. It can also be used as an adjective to describe something that is primary or principal, such as the main character in a story or the main street in a town.
My main goal is to learn Italian.
This sentence is expressing someone's primary goal, which is to learn Italian. 'Principale' is used here to emphasize the importance of this goal above all others.
The main road is blocked due to ongoing work.
In this sentence, 'principale' is used to define the type of road. The 'main road' suggests it's the most important or largest road, usually heavy with traffic. It's currently blocked due to construction or other work.
The main reason I study is to increase my knowledge.
This sentence is explaining the primary reason the speaker is studying. 'Principale' here is used to stress that enhancing their knowledge is the most significant rationale for their study.