上课时，学生由于准备不足，导致注意力不集中。如迟到、没有及时准备课本等

In class, the students due to lack of preparation, leading to lack of concentration. Such as the late, did not prepare textbooks. Therefore, a short time is very difficult to concentrate, emotional stability. <br>Due to weak student basis, poor grades for English class are not interested, the class teacher was talking about casual, there is no good study habits, it is easy to get distracted in class, can not afford to focus attention. <br>Monotonous teaching methods, teaching the old model can not accurately grasp the teaching materials, textbooks can not be scientific and rational process, it can not reflect the teaching philosophy of modern education. Over time, students get bored, then there will be a school does not concentrate phenomenon. <br>Some classroom unexpected contingencies may cause distraction students, teachers lack pedagogical tact, not the use of voluntary attention and involuntary attention for unexpected events occur in the classroom conversion law good for processing. Sometimes a little small voice will divert the attention of students. 

In class, students are not distracted due to lack of preparation. If you are late, you don't prepare your textbooks in time, etc. Therefore, it is difficult to concentrate in a short period of time, to stabilize the mood. <br> Because the student foundation is weak, poor grades, not interested in English class, the class on the teacher said careless, no good learning habits, it is easy to walk in class, can not concentrate. <br> The teaching method of teachers is monotonous, the teaching mode is old, can not accurately grasp the teaching materials, can not deal with teaching materials scientifically and rationally, can not reflect the modern educational teaching concept. Over time, students get bored and become unfocused as soon as they take classes. <br> Some unexpected occasional events in the classroom will cause students to be distracted, teachers lack educational wit, for the emergency in the classroom can not use unintentional attention and intentional attention of the mutual conversion law is well handled. Sometimes a small voice distracts the students. 

In class, students are not focused because of lack of preparation. Such as being late, not preparing textbooks in time, etc. So it's hard to focus and stabilize your mood in a short time.  <br>Because of the students' weak foundation and poor performance, they are not interested in the English class. They are careless about what the teacher says and have no good study habits. They are easily distracted and can not concentrate in the class.  <br>The teaching method of teachers is monotonous, the teaching mode is out of date, the teaching materials cannot be accurately grasped, the teaching materials cannot be scientifically and reasonably handled, and the modern educational teaching idea cannot be embodied. Over time, students will be bored, and then there will be a class will not focus on the phenomenon.  <br>Some unexpected incidents in the classroom will cause students' distraction and teachers' lack of educational wit. For the unexpected incidents in the classroom, we can't use the mutual conversion law of unintentional attention and intentional attention to deal with them well. Sometimes a little voice will distract the students.<br>