Je le ferai la semaine des trois (quatre) jeudis = I shall do it in a week of Sundays (i.
Je lui ferai la barbe quand il voudra = I will show him who is master whenever he likes.
Quand Je le ferai quand même = I shall do it just the same; I shall do it whatever it may cost.
Je ferai des pieds et des mains pour vous être utile = I will do my utmost (strain every nerve) to serve you.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "ferai" in a variety of sentences. We hope that you will now be able to make sentences using this word.