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第一段：引出大学允许学生自由选择任课教师的现象，并简单评述其影响，结尾引出下文。

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第二段：分三点陈述选择教师时所考虑的主要因素，采用从主到次的顺序。

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第三段：首先指出这种做法分别给教师和学生带来的好处；然后简要阐述可能出现的问题。

Students Selecting Their Lecturers

Nowadays many universities （1）entitle the students to choose freely the teachers for some courses, （2）which is welcomed by most students, and is becoming the focus of the students and teachers' concern. （3）There are many factors which will influence the students' choosing a teacher.

（4）First of all, （5）it is generally accepted that a teacher's professional knowledge and ability is the most important factor, since students choose his course to learn knowledge. （4）Moreover, （5）quite a few students think teaching methods and skills are essential to a good teacher. He must know how to teach. （4）In addition, a teacher's humor sense is also often an important factor many students will consider.

? ?Undoubtedly, free choosing of teachers （6）are very beneficial to both teachers and students. （7）On one hand, it can provide a good chance for a teacher to prove and show his ability. （7）On the other hand, by this way, students can choose teachers they like and obtain more initiative in learning. （8）However, since it is a free choice, few excellent teachers will become the focus of most students' choosing, （9）which will lead to an unreasonable class size and influence teaching effect seriously.?? ???

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（1）"使...有权利做某事"

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（2）引导非限制性定语从句

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（3）承上起下

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（4）条理清楚　

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（5）注意变换句式

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（6）"对...有益"

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（7）条理清楚

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（8）表转折：注意关系副词的使用

（9）引导非限制性定语从句