I would like to know why, in detail that the grammar book states that the correct answer to the following sentence is who.
Her adventures included an argument with a camel driver (who/whom) she was certain had cheated her. I feel that this should be treated as an ellipitical prepositional phrase with the word with missing. Therefore, the answer should be whom. Why am I correct or incorrect?
Top answer
a camel driver who she was certain had cheated her. -- 'Who' is the subject of 'cheated'. 'She was certain' is an embedded comment clause.
— Mister Micawber
a camel driver who she was certain had cheated her.
-- 'Who' is the subject of 'cheated'.
'She was certain' is an embedded comment clause.
'Who [she was certain] had cheated her' is a restrictive relative clause modifying 'driver'.
I don't know where you might insert 'with'.
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a camel driver who she was certain had cheated her. -- 'Who' is the subject of 'cheated'. 'She was certain' is an embedded comment clause. 'Who [she was certain] had cheated her' is a restrictive relative clause modifying