"I will have been working on this project for twoo weeks by the end of this month."
Future perfect
Future perfect continuous
Simple future
Express an action that will be completed by a certain point in the futre.
Express an action that will have been in progress before a certain point in the future.
Future perfect continuous
Express an action that will take place in the future (no specific start or end time)
"I will go to the store tomorrow"
"I will have finished my project bu the next week"