EX: She recommends that he see the doctor.
The subjunctive mood is used in dependent clauses that do the following:
1) express a wish;
2) begin with if and express a condition that does not exist (is contrary to fact);
3) begin with as if and as though when such clauses describe a speculation or condition contrary to fact; and
=> 4) begin with that and express a demand, requirement, request, or suggestion.
She wishes her boyfriend were here.
If Juan were more aggressive, he'd be a better hockey player.
We would have passed if we had studied harder.
He acted as if he were guilty.
I requested that he be present at the hearing