Составьте 3 предложения с First и 3 предложения с At First.Зарание огромное спасибо) 

First I'll talk to you and then I'll decide what to do. First do your hometask, then go for a walk. First think, then say a word At first I decided he was pulling my leg, but then I saw he meant it. At first I didn't like him but now I do. At first she didn’t like him, but then she fell in love with him.