Don’t object + infinitive after “suggest.” Instead, use “that” or -ing.
Do not write:
Michael suggested me to study hard for the test
Instead, write the following:
Michael suggested that I study hard for the test.
Michael suggested studying hard for the test.
Do not write:
The professor suggested her to submit a proposal.
Instead, write the following:
The professor suggested that she submit a proposal.
The professor suggested submitting a proposal.
The same is true of “recommend,” by the way. Don’t write:
He recommended me to travel to Hawaii.
Instead, write the following:
He recommended that I travel to Hawaii.
He recommended travelling to Hawaii.
This mistake comes up a lot in TOEFL speaking question one!