在英语中哪些句子算陈述事实

陈述一个过去或现在的事实或者说话人的看法,不一定有用动词原形.不像是你们所学的现在完成时那样对现在有影响之类的.它包括肯定句和否定句两种.陈述句 在书写时句末有 句号 ,而在朗读时则用降调.如：
She became a doctor after college.
We are very busy preparing for the exams.
Not many students attended the lecture.
I don't think you are right.
Reading makes a full man.
Mark Twain is a famous American writer.
There is a great deal of people.