Выписать Infinitive. 1) I can pass this exam. 2) It was a pleasure to be dancing with you. 3) I am happy to have been invited to the party. 4) I wanted to take part in the competition. 5) It's never too late to learn. 6) The weather seems to be changing. 7) It was very kind of you to help the old woman. 8) You are big enough to understand it. 9) It was very nice of you to have come here. 10) They hoped to have won the game. 11) It's good to love and to be loved. 12) Did your parents teach you how to use a knife? 13) It was important to see that before. 14) It was careless of you to have left the door unlocked.
Инфинитив это глагол с частичкой to :)) Например - To have, to use, to read Если по- русски, то это неопределенная форма глагола)