Diseases of the mitral valve greatly affect the function of the heart.

The monk wearing that hat was quietly offering prayers.

His actions exerted a great influence on our plans.

He owns a big house.

He goes to the gym every day to train his trapezius muscle.

His heart is very healthy.

He missed school because of sickness.

I think his behavior is abnormal.

His opinion had a big influence on my decision.

That news greatly influenced his opinion.