I am switching to Singular

Hi. I can`t speak the way I should. Plural is not in my brain, I am always switching to singular. What is wrong with me? I read well.

Hi. Maybe you have a speech disorder or something. Maybe you have trouble with comprehension? I have a friend who was diagnosed with Broca`s aphasia. He cannot fluently express language utterances. His writing is also poor, but he can read very well. His comprehension of language is intact. He understands what am I saying to him. Persons with Broca`s aphasia may have some impairment of comprehension. Unfortunatelly, he has an apracia of the left side that compromises his motor function.