40 Unit 5 10 Regular verbs in  -ire  are conjugated as follows: 11 Many verbs in  -ire  (e.g.  capire  (to understand),  costruire  (to build),  fi nire (to  fi nish/to end),  preferire  (to prefer),  pulire  (to clean)) follow a slightly di ff erent pattern, adding  -isc-  before the singular endings and the third person plural: There is no way of telling which is the right pattern for a verb in  -ire , other than to check in a dictionary. 12 As we saw in Unit 4, the interrogative is formed by adding a question mark at the end of the sentence: Interrogative form Endings -isc-o -isc-i -isc-e -iamo -ite -isc-ono Capire (io)  cap isco (tu)  cap isci (lui/lei)  cap isce (noi)  cap iamo (voi)  cap ite (loro)  cap iscono To understand I understand you understand he/she/it understands we understand you understand they understand Marina capisce tutto. La lezione  fi nisce alle 13.00. Preferisco parlare italiano. Marina understands everything. The lesson/class  fi nishes at 1 p.m. I prefer speaking/to speak Italian. Endings -o -i Partire (io)  part o (tu)  part i To leave I leave you leave -e -iamo -ite -ono (lui/lei)  part e (noi)  part iamo (voi)  part ite (loro)  part ono he/she/it leaves we leave you leave they leave Il treno parte alle 8.00. I miei amici partono domani. Mia sorella dorme. Tutte le mattine apriamo le  fi nestre. The train leaves at eight. My friends are leaving tomorrow. My sister is sleeping/asleep. Every morning we open the windows. Carla resta a casa? Prendi sempre la macchina fotogra fi ca? Quando partite? Capisci tutto? Is Carla staying at home? Do you always take the camera? When are you leaving? Do you understand everything?