will quack
Regular verb: quack - quacked- quacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I will quack
you will quack
she will quack
we will quack
you will quack
they will quack 	I will be quacking
you will be quacking
she will be quacking
we will be quacking
you will be quacking
they will be quacking	I will have quacked
you will have quacked
she will have quacked
we will have quacked
you will have quacked
they will have quacked	I will have been quacking
you will have been quacking
she will have been quacking
we will have been quacking
you will have been quacking
they will have been quacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I will not quack
you will not quack
she will not quack
we will not quack
you will not quack
they will not quack 	I will not be quacking
you will not be quacking
she will not be quacking
we will not be quacking
you will not be quacking
they will not be quacking	I will not have quacked
you will not have quacked
she will not have quacked
we will not have quacked
you will not have quacked
they will not have quacked	I will not have been quacking
you will not have been quacking
she will not have been quacking
we will not have been quacking
you will not have been quacking
they will not have been quacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I quack?
will you quack?
will she quack?
will we quack?
will you quack?
will they quack? 	will I be quacking?
will you be quacking?
will she be quacking?
will we be quacking?
will you be quacking?
will they be quacking? 	will I have quacked?
will you have quacked?
will she have quacked?
will we have quacked?
will you have quacked?
will they have quacked? 	will I have been quacking?
will you have been quacking?
will she have been quacking?
will we have been quacking?
will you have been quacking?
will they have been quacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
will I not quack?
will you not quack?
will she not quack?
will we not quack?
will you not quack?
will they not quack? 	will I not be quacking?
will you not be quacking?
will she not be quacking?
will we not be quacking?
will you not be quacking?
will they not be quacking? 	will I not have quacked?
will you not have quacked?
will she not have quacked?
will we not have quacked?
will you not have quacked?
will they not have quacked? 	will I not have been quacking?
will you not have been quacking?
will she not have been quacking?
will we not have been quacking?
will you not have been quacking?
will they not have been quacking?