陈述句
陈述句是陈述一个事实或者说话人的看法.它包括肯定句（The Affirmative Sentence）和否定句（The Negative Sentence）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 traffic on the street.