优秀的教师应当很好地利用他们的嗓音去调动学生的学习激情，应当在所教授的语言方面有扎实的功底。
Ideal teachers are supposed to make good use of their voices to stimulate students to learn as well as have an adequate command of the language they are teaching.
具备扎实的语言功底是听力训练的基础，而具备一定的背景知识可以弥补语言上的不足。
To have the substantial linguistic knowledge is the base of listening practice, while the relative situational knowledge can make up the disadvantages of linguistic knowledge.
语言功底扎实，极富亲和力和感染力。
Has many fine artistic accomplishments with an extremely rich language background full of affinity and appeal.
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