a) the verb to become: the nif’al of to be
b) to become in colloquial Hebrew: hofech, nehefach, ne’eßah
c) the 6th binyan: pu’al
d) the 7th binyan: huf’al

Present tense of to become is formed with the verb to be in nif’al:

mf
I, you, he, shebecome/sנהיהנהית
niheyeniheyet
we, you, theybecomeנהייםנהיות
niheyimniheyot

to become in past tense:

1.Person2.Person3.Person
singularIyou myou fheshe
becamebecamebecam
נהייתינהייתנהייתנהייהנהייתה
niheyetiniheyetaniheyetniheyahnihyetah
pluralweyou myou fthey
becamebecamebecame
נהיינונהייתםנהייתןנהיו
niheyenuniheyetemniheyetenniheyu