求翻译：因此，教师必须明确本次课程的整体教学目标或者教育目的，然后再根据教学目标选择教学教案，突出重点和难点，加深学生对知识的掌握程度是什么意思？

Therefore, teachers must be clear teaching of this course the overall goal or educational purposes, and then select the teaching lesson plans based on teaching objectives, focus and difficult to enhance the students knowledge levels

Therefore, teachers must be clear of the whole curriculum, teaching objectives or purposes of education and then to the teaching objectives choose teaching curriculum, highlight the key points and difficult points, and to enhance the students' knowledge of the knowledge

Therefore, the teacher must be clear about this curriculum the overall teaching goal or the education goal, then acts according to the teaching target selection teaching lesson plan again, the target key points and the difficulty, deepen the student to the knowledge grasping degree

Therefore, teachers must be clear objective of the whole teaching of the courses or educational purposes, and then teaching by teaching the target select lesson plans, highlight the focal points and difficulties, deepen students ' knowledge of the extent

Therefore, teachers must be clear teaching of this course the overall goal or educational purposes, and then select the teaching lesson plans based on teaching objectives, focus and difficult to enhance the students knowledge levels