English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
PERSONAL PRONOUNS AND VERBAL CHOICES
It is I who ~is~ responsible for the change (nonstandard).
It is I who *am* responsible for the change (standard).
I’ll say it’s you who ~is~ to blame for this (nonstandard).
I’ll say it’s you who *are* to blam for this (standard).
Note: It should be noted that the subjects of those sentences are “I” and “you”. Inasmuch as you cannot say “I is responsible”, you cannot also say “It is I who is responsible” since “who” is not the subject of the sentence”.
GAB
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